./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI --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 9380fcd5e8279275d54611c820c997d6cd3c87ac ............................................................................................................................................ 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_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI --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 9380fcd5e8279275d54611c820c997d6cd3c87ac ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:45,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:45,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:45,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:45,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:45,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:45,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:45,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:45,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:45,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:45,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:45,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:45,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:45,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:45,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:45,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:45,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:45,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:45,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:45,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:45,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:45,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:45,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:45,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:45,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:45,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:45,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:45,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:45,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:45,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:45,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:45,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:45,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:45,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:45,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:45,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:45,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:45,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:45,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:45,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:45,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:45,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:45,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:45,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:45,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:45,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:45,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:45,913 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:45,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:45,914 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:45,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:45,914 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:45,915 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:45,916 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:45,916 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:45,916 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:45,916 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:45,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:45,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:45,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:45,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:45,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:45,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:45,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:45,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:45,919 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:45,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:45,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:45,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:45,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:45,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:45,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:45,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:45,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:45,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:45,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:45,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:45,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:45,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:45,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:45,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:45,924 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_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9380fcd5e8279275d54611c820c997d6cd3c87ac [2021-10-11 02:27:46,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:46,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:46,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:46,244 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:46,245 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:46,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2021-10-11 02:27:46,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/958f0d6a7/08ed0b7fcb51482d8d4b538e8e0e840a/FLAG0c868c24e [2021-10-11 02:27:46,961 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:46,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2021-10-11 02:27:46,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/958f0d6a7/08ed0b7fcb51482d8d4b538e8e0e840a/FLAG0c868c24e [2021-10-11 02:27:47,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/958f0d6a7/08ed0b7fcb51482d8d4b538e8e0e840a [2021-10-11 02:27:47,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:47,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:47,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:47,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:47,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:47,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c27450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47, skipping insertion in model container [2021-10-11 02:27:47,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:47" (1/1) ... [2021-10-11 02:27:47,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:47,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:47,643 WARN L226 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_ced05a19-8b87-4a00-8e99-075908191787/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[4942,4955] [2021-10-11 02:27:47,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:47,788 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) [2021-10-11 02:27:47,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e82afea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:47, skipping insertion in model container [2021-10-11 02:27:47,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:47,790 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:27:47,793 INFO L168 Benchmark]: Toolchain (without parser) took 559.53 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 83.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,795 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:47,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.29 ms. Allocated memory is still 113.2 MB. Free memory was 74.1 MB in the beginning and 83.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 543.29 ms. Allocated memory is still 113.2 MB. Free memory was 74.1 MB in the beginning and 83.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 352]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:50,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:50,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:50,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:50,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:50,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:50,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:50,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:50,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:50,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:50,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:50,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:50,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:50,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:50,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:50,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:50,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:50,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:50,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:50,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:50,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:50,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:50,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:50,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:50,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:50,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:50,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:50,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:50,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:50,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:50,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:50,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:50,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:50,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:50,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:50,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:50,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:50,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:50,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:50,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:50,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:50,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:27:50,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:50,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:50,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:50,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:50,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:50,222 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:50,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:50,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:50,222 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:50,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:50,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:50,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:50,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:50,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:50,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:50,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:50,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:50,226 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:27:50,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:27:50,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:50,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:50,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:50,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:50,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:50,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:27:50,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:50,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:50,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:50,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:50,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:50,228 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:27:50,228 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:50,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:50,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:50,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:50,229 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_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9380fcd5e8279275d54611c820c997d6cd3c87ac [2021-10-11 02:27:50,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:50,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:50,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:50,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:50,666 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:50,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2021-10-11 02:27:50,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/7fbc59adb/da98fd36e2a94fb68dcaf89a1327e962/FLAGb0d57fb2d [2021-10-11 02:27:51,399 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:51,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2021-10-11 02:27:51,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/7fbc59adb/da98fd36e2a94fb68dcaf89a1327e962/FLAGb0d57fb2d [2021-10-11 02:27:51,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/data/7fbc59adb/da98fd36e2a94fb68dcaf89a1327e962 [2021-10-11 02:27:51,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:51,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:51,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:51,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:51,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:51,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212fe08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51, skipping insertion in model container [2021-10-11 02:27:51,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:51,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:52,089 WARN L226 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_ced05a19-8b87-4a00-8e99-075908191787/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[4942,4955] [2021-10-11 02:27:52,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:52,173 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:27:52,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:52,204 WARN L226 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_ced05a19-8b87-4a00-8e99-075908191787/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[4942,4955] [2021-10-11 02:27:52,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:52,256 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:52,308 WARN L226 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_ced05a19-8b87-4a00-8e99-075908191787/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[4942,4955] [2021-10-11 02:27:52,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:52,432 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:52,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52 WrapperNode [2021-10-11 02:27:52,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:52,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:52,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:52,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:52,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:52,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:52,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:52,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:52,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... [2021-10-11 02:27:52,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:52,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:52,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:52,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:52,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:27:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:55,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:55,057 INFO L299 CfgBuilder]: Removed 192 assume(true) statements. [2021-10-11 02:27:55,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:55 BoogieIcfgContainer [2021-10-11 02:27:55,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:55,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:55,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:55,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:55,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:51" (1/3) ... [2021-10-11 02:27:55,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162aec29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:55, skipping insertion in model container [2021-10-11 02:27:55,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:52" (2/3) ... [2021-10-11 02:27:55,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162aec29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:55, skipping insertion in model container [2021-10-11 02:27:55,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:55" (3/3) ... [2021-10-11 02:27:55,067 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2021-10-11 02:27:55,080 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:55,084 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:27:55,094 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:27:55,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:55,119 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:55,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:55,119 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:55,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:55,119 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:55,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:55,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2021-10-11 02:27:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:27:55,140 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:55,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:55,141 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:55,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:55,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1880189342, now seen corresponding path program 1 times [2021-10-11 02:27:55,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:55,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056956204] [2021-10-11 02:27:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:55,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:27:55,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:55,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:55,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056956204] [2021-10-11 02:27:55,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:55,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:55,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248156678] [2021-10-11 02:27:55,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:55,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:55,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:55,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:55,507 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2021-10-11 02:27:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:55,539 INFO L93 Difference]: Finished difference Result 252 states and 377 transitions. [2021-10-11 02:27:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:55,540 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 02:27:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:55,551 INFO L225 Difference]: With dead ends: 252 [2021-10-11 02:27:55,551 INFO L226 Difference]: Without dead ends: 125 [2021-10-11 02:27:55,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-11 02:27:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-11 02:27:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-10-11 02:27:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2021-10-11 02:27:55,599 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2021-10-11 02:27:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:55,600 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-11 02:27:55,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2021-10-11 02:27:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:27:55,602 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:55,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:55,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:27:55,820 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1368021057, now seen corresponding path program 1 times [2021-10-11 02:27:55,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:55,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595485149] [2021-10-11 02:27:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:56,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:27:56,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:56,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:56,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595485149] [2021-10-11 02:27:56,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:56,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:56,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040097070] [2021-10-11 02:27:56,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:56,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:56,139 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2021-10-11 02:27:56,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:56,169 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2021-10-11 02:27:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:56,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 02:27:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:56,173 INFO L225 Difference]: With dead ends: 125 [2021-10-11 02:27:56,174 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:27:56,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:56,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:27:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:27:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:27:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2021-10-11 02:27:56,189 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2021-10-11 02:27:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:56,192 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2021-10-11 02:27:56,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2021-10-11 02:27:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:27:56,195 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:56,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:56,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:27:56,414 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:56,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2019078694, now seen corresponding path program 1 times [2021-10-11 02:27:56,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:56,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174005642] [2021-10-11 02:27:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:56,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:27:56,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:56,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:56,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174005642] [2021-10-11 02:27:56,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:56,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:56,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953782308] [2021-10-11 02:27:56,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:56,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:56,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:56,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:56,659 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2021-10-11 02:27:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:56,668 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2021-10-11 02:27:56,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:56,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 02:27:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:56,669 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:27:56,670 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:27:56,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:56,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:27:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:27:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:27:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2021-10-11 02:27:56,677 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2021-10-11 02:27:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:56,677 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2021-10-11 02:27:56,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2021-10-11 02:27:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:27:56,679 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:56,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:56,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:27:56,895 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:56,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1511639432, now seen corresponding path program 1 times [2021-10-11 02:27:56,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:56,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576052248] [2021-10-11 02:27:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:27:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:57,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576052248] [2021-10-11 02:27:57,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:57,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:57,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226974406] [2021-10-11 02:27:57,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:57,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:57,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:57,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:57,162 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2021-10-11 02:27:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,240 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2021-10-11 02:27:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:57,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:27:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,245 INFO L225 Difference]: With dead ends: 117 [2021-10-11 02:27:57,245 INFO L226 Difference]: Without dead ends: 72 [2021-10-11 02:27:57,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:57,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-11 02:27:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-10-11 02:27:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:27:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2021-10-11 02:27:57,268 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2021-10-11 02:27:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,270 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2021-10-11 02:27:57,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2021-10-11 02:27:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:27:57,272 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:27:57,492 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,492 INFO L82 PathProgramCache]: Analyzing trace with hash 406595852, now seen corresponding path program 1 times [2021-10-11 02:27:57,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:57,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735682902] [2021-10-11 02:27:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:27:57,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:57,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735682902] [2021-10-11 02:27:57,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:57,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:57,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066101335] [2021-10-11 02:27:57,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:57,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:57,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:57,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:57,808 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2021-10-11 02:27:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,946 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2021-10-11 02:27:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:57,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-10-11 02:27:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,949 INFO L225 Difference]: With dead ends: 247 [2021-10-11 02:27:57,949 INFO L226 Difference]: Without dead ends: 183 [2021-10-11 02:27:57,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-11 02:27:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2021-10-11 02:27:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-10-11 02:27:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2021-10-11 02:27:57,985 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2021-10-11 02:27:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,986 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2021-10-11 02:27:57,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2021-10-11 02:27:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:27:57,992 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:58,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:27:58,207 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:58,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1601220342, now seen corresponding path program 1 times [2021-10-11 02:27:58,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:58,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275040903] [2021-10-11 02:27:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:58,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:58,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:58,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:58,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275040903] [2021-10-11 02:27:58,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:58,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:58,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964725471] [2021-10-11 02:27:58,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:58,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:58,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:58,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:58,456 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2021-10-11 02:27:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:59,908 INFO L93 Difference]: Finished difference Result 290 states and 409 transitions. [2021-10-11 02:27:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:59,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-10-11 02:27:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:59,910 INFO L225 Difference]: With dead ends: 290 [2021-10-11 02:27:59,910 INFO L226 Difference]: Without dead ends: 226 [2021-10-11 02:27:59,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-11 02:27:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 219. [2021-10-11 02:27:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-10-11 02:27:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 303 transitions. [2021-10-11 02:27:59,932 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 303 transitions. Word has length 31 [2021-10-11 02:27:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:59,932 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 303 transitions. [2021-10-11 02:27:59,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 303 transitions. [2021-10-11 02:27:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:27:59,933 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:59,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:00,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:28:00,155 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:00,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1343054904, now seen corresponding path program 1 times [2021-10-11 02:28:00,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:00,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785921309] [2021-10-11 02:28:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:00,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:00,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785921309] [2021-10-11 02:28:00,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:00,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:00,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335538074] [2021-10-11 02:28:00,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:00,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:00,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:00,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:00,403 INFO L87 Difference]: Start difference. First operand 219 states and 303 transitions. Second operand 4 states. [2021-10-11 02:28:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:00,487 INFO L93 Difference]: Finished difference Result 685 states and 960 transitions. [2021-10-11 02:28:00,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:00,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-10-11 02:28:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:00,491 INFO L225 Difference]: With dead ends: 685 [2021-10-11 02:28:00,491 INFO L226 Difference]: Without dead ends: 512 [2021-10-11 02:28:00,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-11 02:28:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 223. [2021-10-11 02:28:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-10-11 02:28:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 306 transitions. [2021-10-11 02:28:00,518 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 306 transitions. Word has length 31 [2021-10-11 02:28:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:00,523 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 306 transitions. [2021-10-11 02:28:00,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 306 transitions. [2021-10-11 02:28:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:28:00,525 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:00,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:00,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:28:00,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:00,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:00,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1736081914, now seen corresponding path program 1 times [2021-10-11 02:28:00,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:00,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221552863] [2021-10-11 02:28:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:28:00,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:01,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:01,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221552863] [2021-10-11 02:28:01,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:01,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:01,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977997288] [2021-10-11 02:28:01,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:01,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:01,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:01,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:01,007 INFO L87 Difference]: Start difference. First operand 223 states and 306 transitions. Second operand 5 states. [2021-10-11 02:28:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:01,150 INFO L93 Difference]: Finished difference Result 712 states and 991 transitions. [2021-10-11 02:28:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:01,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-10-11 02:28:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:01,154 INFO L225 Difference]: With dead ends: 712 [2021-10-11 02:28:01,154 INFO L226 Difference]: Without dead ends: 495 [2021-10-11 02:28:01,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-11 02:28:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 238. [2021-10-11 02:28:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-10-11 02:28:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 320 transitions. [2021-10-11 02:28:01,186 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 320 transitions. Word has length 31 [2021-10-11 02:28:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:01,186 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 320 transitions. [2021-10-11 02:28:01,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 320 transitions. [2021-10-11 02:28:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 02:28:01,187 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:01,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:01,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:28:01,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:01,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:01,402 INFO L82 PathProgramCache]: Analyzing trace with hash -468355170, now seen corresponding path program 1 times [2021-10-11 02:28:01,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:01,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724314223] [2021-10-11 02:28:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:01,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:01,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:01,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:01,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724314223] [2021-10-11 02:28:01,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:01,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:01,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682689360] [2021-10-11 02:28:01,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:01,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:01,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:01,664 INFO L87 Difference]: Start difference. First operand 238 states and 320 transitions. Second operand 6 states. [2021-10-11 02:28:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:01,964 INFO L93 Difference]: Finished difference Result 1154 states and 1547 transitions. [2021-10-11 02:28:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:28:01,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-10-11 02:28:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:01,970 INFO L225 Difference]: With dead ends: 1154 [2021-10-11 02:28:01,970 INFO L226 Difference]: Without dead ends: 922 [2021-10-11 02:28:01,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:28:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-10-11 02:28:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 458. [2021-10-11 02:28:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2021-10-11 02:28:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 606 transitions. [2021-10-11 02:28:02,042 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 606 transitions. Word has length 34 [2021-10-11 02:28:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:02,042 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 606 transitions. [2021-10-11 02:28:02,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 606 transitions. [2021-10-11 02:28:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 02:28:02,043 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:02,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:02,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:28:02,259 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1306652192, now seen corresponding path program 1 times [2021-10-11 02:28:02,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:02,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434530880] [2021-10-11 02:28:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:02,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:28:02,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:02,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:02,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434530880] [2021-10-11 02:28:02,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:02,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:02,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274335793] [2021-10-11 02:28:02,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:02,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:02,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:02,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:02,521 INFO L87 Difference]: Start difference. First operand 458 states and 606 transitions. Second operand 6 states. [2021-10-11 02:28:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:03,916 INFO L93 Difference]: Finished difference Result 940 states and 1239 transitions. [2021-10-11 02:28:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:03,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-10-11 02:28:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:03,920 INFO L225 Difference]: With dead ends: 940 [2021-10-11 02:28:03,920 INFO L226 Difference]: Without dead ends: 574 [2021-10-11 02:28:03,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:28:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-11 02:28:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 452. [2021-10-11 02:28:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2021-10-11 02:28:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 594 transitions. [2021-10-11 02:28:03,984 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 594 transitions. Word has length 34 [2021-10-11 02:28:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:03,984 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 594 transitions. [2021-10-11 02:28:03,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 594 transitions. [2021-10-11 02:28:03,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:28:03,985 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:03,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:04,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:28:04,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash -553017344, now seen corresponding path program 1 times [2021-10-11 02:28:04,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:04,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771168] [2021-10-11 02:28:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:28:04,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:28:04,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:04,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771168] [2021-10-11 02:28:04,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:04,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:04,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946121345] [2021-10-11 02:28:04,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:04,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:04,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:04,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:04,472 INFO L87 Difference]: Start difference. First operand 452 states and 594 transitions. Second operand 5 states. [2021-10-11 02:28:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:04,615 INFO L93 Difference]: Finished difference Result 1031 states and 1358 transitions. [2021-10-11 02:28:04,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:04,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2021-10-11 02:28:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:04,619 INFO L225 Difference]: With dead ends: 1031 [2021-10-11 02:28:04,620 INFO L226 Difference]: Without dead ends: 585 [2021-10-11 02:28:04,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-10-11 02:28:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 452. [2021-10-11 02:28:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2021-10-11 02:28:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 584 transitions. [2021-10-11 02:28:04,685 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 584 transitions. Word has length 51 [2021-10-11 02:28:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:04,686 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 584 transitions. [2021-10-11 02:28:04,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 584 transitions. [2021-10-11 02:28:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:28:04,687 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:04,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:04,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:28:04,900 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:04,901 INFO L82 PathProgramCache]: Analyzing trace with hash 148582530, now seen corresponding path program 1 times [2021-10-11 02:28:04,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:04,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347152000] [2021-10-11 02:28:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:05,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:28:05,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:05,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347152000] [2021-10-11 02:28:05,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:05,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:05,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364165109] [2021-10-11 02:28:05,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:05,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:05,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:05,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:05,143 INFO L87 Difference]: Start difference. First operand 452 states and 584 transitions. Second operand 4 states. [2021-10-11 02:28:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:05,256 INFO L93 Difference]: Finished difference Result 957 states and 1247 transitions. [2021-10-11 02:28:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:05,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-10-11 02:28:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:05,260 INFO L225 Difference]: With dead ends: 957 [2021-10-11 02:28:05,261 INFO L226 Difference]: Without dead ends: 511 [2021-10-11 02:28:05,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-10-11 02:28:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 388. [2021-10-11 02:28:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2021-10-11 02:28:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 496 transitions. [2021-10-11 02:28:05,316 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 496 transitions. Word has length 51 [2021-10-11 02:28:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:05,316 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 496 transitions. [2021-10-11 02:28:05,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 496 transitions. [2021-10-11 02:28:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:28:05,317 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:05,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:05,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:28:05,538 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:05,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:05,538 INFO L82 PathProgramCache]: Analyzing trace with hash -701166778, now seen corresponding path program 1 times [2021-10-11 02:28:05,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:05,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295368929] [2021-10-11 02:28:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:05,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:05,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:28:05,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:05,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295368929] [2021-10-11 02:28:05,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:05,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:28:05,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150147269] [2021-10-11 02:28:05,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:05,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:05,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:05,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:05,820 INFO L87 Difference]: Start difference. First operand 388 states and 496 transitions. Second operand 6 states. [2021-10-11 02:28:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:06,123 INFO L93 Difference]: Finished difference Result 1116 states and 1468 transitions. [2021-10-11 02:28:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:28:06,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-10-11 02:28:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:06,128 INFO L225 Difference]: With dead ends: 1116 [2021-10-11 02:28:06,129 INFO L226 Difference]: Without dead ends: 780 [2021-10-11 02:28:06,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:28:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-11 02:28:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 388. [2021-10-11 02:28:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2021-10-11 02:28:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 494 transitions. [2021-10-11 02:28:06,186 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 494 transitions. Word has length 52 [2021-10-11 02:28:06,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:06,188 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 494 transitions. [2021-10-11 02:28:06,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:06,188 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 494 transitions. [2021-10-11 02:28:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-11 02:28:06,189 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:06,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:06,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:28:06,405 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,405 INFO L82 PathProgramCache]: Analyzing trace with hash -956023316, now seen corresponding path program 1 times [2021-10-11 02:28:06,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:06,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848380789] [2021-10-11 02:28:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:06,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:28:06,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:28:06,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848380789] [2021-10-11 02:28:06,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2090859165] [2021-10-11 02:28:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:28:07,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:28:07,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827073536] [2021-10-11 02:28:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:07,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:07,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:28:07,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:28:07,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:28:07,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-11 02:28:07,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849498134] [2021-10-11 02:28:07,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:28:07,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:07,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:28:07,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:28:07,443 INFO L87 Difference]: Start difference. First operand 388 states and 494 transitions. Second operand 10 states. [2021-10-11 02:28:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:09,961 INFO L93 Difference]: Finished difference Result 1895 states and 2440 transitions. [2021-10-11 02:28:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-11 02:28:09,961 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-10-11 02:28:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:09,969 INFO L225 Difference]: With dead ends: 1895 [2021-10-11 02:28:09,970 INFO L226 Difference]: Without dead ends: 1559 [2021-10-11 02:28:09,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:28:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2021-10-11 02:28:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 524. [2021-10-11 02:28:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2021-10-11 02:28:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 686 transitions. [2021-10-11 02:28:10,089 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 686 transitions. Word has length 53 [2021-10-11 02:28:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:10,089 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 686 transitions. [2021-10-11 02:28:10,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:28:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 686 transitions. [2021-10-11 02:28:10,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-11 02:28:10,091 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:10,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:10,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:10,710 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:10,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1396677984, now seen corresponding path program 2 times [2021-10-11 02:28:10,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:10,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725780945] [2021-10-11 02:28:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:11,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:13,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:13,406 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:28:13,406 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:13,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2021-10-11 02:28:13,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:13 BoogieIcfgContainer [2021-10-11 02:28:13,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:13,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:13,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:13,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:13,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:55" (3/4) ... [2021-10-11 02:28:13,784 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:28:13,913 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced05a19-8b87-4a00-8e99-075908191787/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:13,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:13,915 INFO L168 Benchmark]: Toolchain (without parser) took 22220.74 ms. Allocated memory was 77.6 MB in the beginning and 163.6 MB in the end (delta: 86.0 MB). Free memory was 55.2 MB in the beginning and 89.9 MB in the end (delta: -34.7 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:13,915 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:13,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.21 ms. Allocated memory is still 77.6 MB. Free memory was 55.0 MB in the beginning and 42.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:13,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.89 ms. Allocated memory is still 77.6 MB. Free memory was 42.8 MB in the beginning and 60.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:13,916 INFO L168 Benchmark]: Boogie Preprocessor took 79.08 ms. Allocated memory is still 77.6 MB. Free memory was 60.1 MB in the beginning and 57.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:13,916 INFO L168 Benchmark]: RCFGBuilder took 2424.61 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 56.8 MB in the beginning and 55.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:13,917 INFO L168 Benchmark]: TraceAbstraction took 18719.73 ms. Allocated memory was 94.4 MB in the beginning and 163.6 MB in the end (delta: 69.2 MB). Free memory was 54.5 MB in the beginning and 118.2 MB in the end (delta: -63.7 MB). Peak memory consumption was 77.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:13,917 INFO L168 Benchmark]: Witness Printer took 132.25 ms. Allocated memory is still 163.6 MB. Free memory was 118.2 MB in the beginning and 89.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:13,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 738.21 ms. Allocated memory is still 77.6 MB. Free memory was 55.0 MB in the beginning and 42.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 119.89 ms. Allocated memory is still 77.6 MB. Free memory was 42.8 MB in the beginning and 60.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.08 ms. Allocated memory is still 77.6 MB. Free memory was 60.1 MB in the beginning and 57.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2424.61 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 56.8 MB in the beginning and 55.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18719.73 ms. Allocated memory was 94.4 MB in the beginning and 163.6 MB in the end (delta: 69.2 MB). Free memory was 54.5 MB in the beginning and 118.2 MB in the end (delta: -63.7 MB). Peak memory consumption was 77.1 MB. Max. memory is 16.1 GB. * Witness Printer took 132.25 ms. Allocated memory is still 163.6 MB. Free memory was 118.2 MB in the beginning and 89.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 319]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L119] int pumpRunning = 0; [L120] int systemActive = 1; [L493] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L717] int cleanupTimeShifts = 4; [L816] int waterLevel = 1; [L817] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L793] int retValue_acc ; [L794] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L936] int retValue_acc ; [L939] retValue_acc = 1 [L940] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] COND TRUE waterLevel < 2 [L835] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L185] COND FALSE !(\read(pumpRunning)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L159] COND TRUE ! pumpRunning [L296] int retValue_acc ; [L297] int tmp ; [L298] int tmp___0 ; [L896] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] COND FALSE !(waterLevel < 2) [L903] retValue_acc = 0 [L904] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L302] tmp = isHighWaterSensorDry() [L304] COND FALSE !(\read(tmp)) [L307] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L309] retValue_acc = tmp___0 [L310] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L161] tmp = isHighWaterLevel() [L163] COND TRUE \read(tmp) [L215] int tmp ; [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L219] tmp = isMethaneAlarm() [L221] COND FALSE !(\read(tmp)) [L210] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L697] tmp = getWaterLevel() [L699] COND TRUE tmp == 0 [L251] int retValue_acc ; [L254] retValue_acc = pumpRunning [L255] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L701] tmp___0 = isPumpRunning() [L703] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L319] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.5s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1600 SDtfs, 2883 SDslu, 3202 SDs, 0 SdLazy, 553 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 772 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=524occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 2894 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 655 NumberOfCodeBlocks, 655 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 723 ConstructedInterpolants, 0 QuantifiedInterpolants, 101697 SizeOfPredicates, 37 NumberOfNonLiveVariables, 3488 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 72/126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...