./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b ............................................................................................................................................ 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_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:20:50,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:20:50,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:20:50,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:20:50,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:20:50,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:20:50,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:20:50,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:20:50,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:20:50,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:20:50,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:20:50,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:20:50,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:20:50,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:20:50,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:20:50,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:20:50,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:20:50,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:20:50,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:20:50,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:20:50,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:20:50,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:20:50,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:20:50,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:20:50,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:20:50,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:20:50,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:20:50,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:20:50,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:20:50,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:20:50,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:20:50,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:20:50,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:20:50,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:20:50,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:20:50,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:20:50,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:20:50,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:20:50,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:20:50,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:20:50,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:20:50,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:20:50,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:20:50,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:20:50,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:20:50,204 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:20:50,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:20:50,204 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:20:50,204 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:20:50,204 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:20:50,211 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:20:50,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:20:50,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:20:50,213 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:20:50,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:20:50,214 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:20:50,214 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:20:50,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:20:50,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:20:50,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:20:50,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:20:50,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:20:50,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:20:50,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:20:50,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:20:50,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:20:50,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:20:50,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:20:50,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:20:50,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:20:50,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:20:50,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:20:50,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:20:50,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:20:50,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:20:50,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:20:50,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:20:50,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:20:50,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:20:50,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:20:50,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:20:50,221 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_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b [2021-10-24 10:20:50,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:20:50,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:20:50,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:20:50,523 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:20:50,524 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:20:50,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-24 10:20:50,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/f0f083989/889b8a2baffe4d88b278e2c9a5d55df3/FLAG1c0da8f3b [2021-10-24 10:20:51,080 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:20:51,081 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-24 10:20:51,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/f0f083989/889b8a2baffe4d88b278e2c9a5d55df3/FLAG1c0da8f3b [2021-10-24 10:20:51,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/f0f083989/889b8a2baffe4d88b278e2c9a5d55df3 [2021-10-24 10:20:51,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:20:51,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:20:51,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:20:51,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:20:51,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:20:51,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:51" (1/1) ... [2021-10-24 10:20:51,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5007677b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:51, skipping insertion in model container [2021-10-24 10:20:51,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:51" (1/1) ... [2021-10-24 10:20:51,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:20:51,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:20:51,728 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-24 10:20:51,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:20:51,817 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 10:20:51,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44b3e72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:51, skipping insertion in model container [2021-10-24 10:20:51,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:20:51,828 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:20:51,830 INFO L168 Benchmark]: Toolchain (without parser) took 389.06 ms. Allocated memory is still 111.1 MB. Free memory was 78.7 MB in the beginning and 82.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:20:51,831 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:20:51,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.02 ms. Allocated memory is still 111.1 MB. Free memory was 78.5 MB in the beginning and 82.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:20:51,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.02 ms. Allocated memory is still 111.1 MB. Free memory was 78.5 MB in the beginning and 82.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 582]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:20:54,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:20:54,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:20:54,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:20:54,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:20:54,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:20:54,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:20:54,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:20:54,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:20:54,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:20:54,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:20:54,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:20:54,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:20:54,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:20:54,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:20:54,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:20:54,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:20:54,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:20:54,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:20:54,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:20:54,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:20:54,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:20:54,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:20:54,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:20:54,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:20:54,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:20:54,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:20:54,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:20:54,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:20:54,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:20:54,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:20:54,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:20:54,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:20:54,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:20:54,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:20:54,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:20:54,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:20:54,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:20:54,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:20:54,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:20:54,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:20:54,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:20:54,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:20:54,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:20:54,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:20:54,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:20:54,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:20:54,159 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:20:54,160 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:20:54,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:20:54,161 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:20:54,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:20:54,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:20:54,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:20:54,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:20:54,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:20:54,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:20:54,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:20:54,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:20:54,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:20:54,165 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:20:54,165 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:20:54,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:20:54,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:20:54,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:20:54,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:20:54,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:20:54,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:20:54,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:20:54,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:20:54,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:20:54,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:20:54,168 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:20:54,168 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:20:54,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:20:54,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:20:54,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:20:54,169 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_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b [2021-10-24 10:20:54,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:20:54,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:20:54,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:20:54,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:20:54,606 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:20:54,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-24 10:20:54,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/68530f9d8/81b34558bbc8419b90de00f95ad14181/FLAG7a9ca512e [2021-10-24 10:20:55,321 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:20:55,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-24 10:20:55,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/68530f9d8/81b34558bbc8419b90de00f95ad14181/FLAG7a9ca512e [2021-10-24 10:20:55,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/data/68530f9d8/81b34558bbc8419b90de00f95ad14181 [2021-10-24 10:20:55,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:20:55,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:20:55,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:20:55,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:20:55,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:20:55,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:55" (1/1) ... [2021-10-24 10:20:55,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689282be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:55, skipping insertion in model container [2021-10-24 10:20:55,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:55" (1/1) ... [2021-10-24 10:20:55,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:20:55,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:20:55,908 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-24 10:20:55,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:20:55,995 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:20:56,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:20:56,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-24 10:20:56,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:20:56,073 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:20:56,118 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-24 10:20:56,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:20:56,213 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:20:56,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56 WrapperNode [2021-10-24 10:20:56,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:20:56,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:20:56,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:20:56,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:20:56,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:20:56,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:20:56,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:20:56,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:20:56,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:20:56,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:20:56,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:20:56,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:20:56,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (1/1) ... [2021-10-24 10:20:56,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:20:56,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:20:56,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:20:56,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:20:56,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:20:56,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:20:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:20:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:20:58,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:20:58,835 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-10-24 10:20:58,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:58 BoogieIcfgContainer [2021-10-24 10:20:58,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:20:58,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:20:58,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:20:58,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:20:58,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:20:55" (1/3) ... [2021-10-24 10:20:58,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4908795f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:58, skipping insertion in model container [2021-10-24 10:20:58,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:56" (2/3) ... [2021-10-24 10:20:58,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4908795f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:58, skipping insertion in model container [2021-10-24 10:20:58,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:58" (3/3) ... [2021-10-24 10:20:58,849 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2021-10-24 10:20:58,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:20:58,856 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:20:58,918 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:20:58,924 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:20:58,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:20:58,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:20:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:20:58,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:20:58,947 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:20:58,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:20:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:20:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash 929673937, now seen corresponding path program 1 times [2021-10-24 10:20:58,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:20:58,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72180848] [2021-10-24 10:20:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:20:58,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:20:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:20:58,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:20:58,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:20:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:20:59,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:20:59,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:20:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:20:59,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:20:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:20:59,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:20:59,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72180848] [2021-10-24 10:20:59,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72180848] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:20:59,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:20:59,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:20:59,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002052657] [2021-10-24 10:20:59,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:20:59,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:20:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:20:59,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:20:59,425 INFO L87 Difference]: Start difference. First operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:20:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:20:59,490 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2021-10-24 10:20:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:20:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 10:20:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:20:59,500 INFO L225 Difference]: With dead ends: 172 [2021-10-24 10:20:59,500 INFO L226 Difference]: Without dead ends: 85 [2021-10-24 10:20:59,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:20:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-24 10:20:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-24 10:20:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 84 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:20:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2021-10-24 10:20:59,541 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2021-10-24 10:20:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:20:59,541 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2021-10-24 10:20:59,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:20:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2021-10-24 10:20:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:20:59,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:20:59,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:20:59,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:20:59,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:20:59,758 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:20:59,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:20:59,758 INFO L82 PathProgramCache]: Analyzing trace with hash -117082960, now seen corresponding path program 1 times [2021-10-24 10:20:59,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:20:59,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683048117] [2021-10-24 10:20:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:20:59,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:20:59,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:20:59,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:20:59,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:20:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:20:59,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:20:59,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:00,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:00,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:00,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683048117] [2021-10-24 10:21:00,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683048117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:00,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:00,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:21:00,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544344781] [2021-10-24 10:21:00,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:21:00,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:21:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:21:00,167 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:00,199 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2021-10-24 10:21:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:21:00,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-24 10:21:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:00,202 INFO L225 Difference]: With dead ends: 85 [2021-10-24 10:21:00,203 INFO L226 Difference]: Without dead ends: 39 [2021-10-24 10:21:00,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:21:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-24 10:21:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-24 10:21:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-24 10:21:00,220 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2021-10-24 10:21:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:00,221 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-24 10:21:00,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-24 10:21:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 10:21:00,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:00,228 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:00,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:00,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:00,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:00,452 INFO L82 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2021-10-24 10:21:00,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:00,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566865069] [2021-10-24 10:21:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:00,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:00,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:00,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:00,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:21:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:00,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:21:00,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:00,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:00,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:00,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566865069] [2021-10-24 10:21:00,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566865069] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:00,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:00,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:21:00,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176444405] [2021-10-24 10:21:00,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:21:00,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:21:00,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:21:00,899 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:00,940 INFO L93 Difference]: Finished difference Result 128 states and 187 transitions. [2021-10-24 10:21:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:21:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-24 10:21:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:00,945 INFO L225 Difference]: With dead ends: 128 [2021-10-24 10:21:00,945 INFO L226 Difference]: Without dead ends: 95 [2021-10-24 10:21:00,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:21:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-24 10:21:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 58. [2021-10-24 10:21:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 57 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2021-10-24 10:21:00,967 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 22 [2021-10-24 10:21:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:00,968 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2021-10-24 10:21:00,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2021-10-24 10:21:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 10:21:00,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:00,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:00,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:01,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:01,187 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:01,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:01,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2021-10-24 10:21:01,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:01,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064751546] [2021-10-24 10:21:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:01,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:01,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:01,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:01,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:21:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:21:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:01,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:01,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:01,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064751546] [2021-10-24 10:21:01,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064751546] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:01,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:01,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:21:01,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106027675] [2021-10-24 10:21:01,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:21:01,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:01,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:21:01,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:21:01,500 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:01,549 INFO L93 Difference]: Finished difference Result 131 states and 192 transitions. [2021-10-24 10:21:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:21:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-24 10:21:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:01,551 INFO L225 Difference]: With dead ends: 131 [2021-10-24 10:21:01,551 INFO L226 Difference]: Without dead ends: 79 [2021-10-24 10:21:01,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:21:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-24 10:21:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-10-24 10:21:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 76 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2021-10-24 10:21:01,562 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 23 [2021-10-24 10:21:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:01,562 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2021-10-24 10:21:01,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2021-10-24 10:21:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 10:21:01,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:01,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:01,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:01,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:01,776 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:01,776 INFO L82 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2021-10-24 10:21:01,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:01,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72787270] [2021-10-24 10:21:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:01,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:01,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:01,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:01,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:21:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:01,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:21:01,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:02,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:02,217 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:02,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72787270] [2021-10-24 10:21:02,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72787270] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:02,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:02,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 10:21:02,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773471568] [2021-10-24 10:21:02,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:21:02,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:02,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:21:02,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:21:02,219 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:02,482 INFO L93 Difference]: Finished difference Result 540 states and 790 transitions. [2021-10-24 10:21:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-24 10:21:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 10:21:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:02,488 INFO L225 Difference]: With dead ends: 540 [2021-10-24 10:21:02,488 INFO L226 Difference]: Without dead ends: 469 [2021-10-24 10:21:02,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-24 10:21:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-10-24 10:21:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 198. [2021-10-24 10:21:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3959390862944163) internal successors, (275), 197 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 275 transitions. [2021-10-24 10:21:02,548 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 275 transitions. Word has length 25 [2021-10-24 10:21:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:02,549 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 275 transitions. [2021-10-24 10:21:02,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 275 transitions. [2021-10-24 10:21:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-24 10:21:02,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:02,557 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:02,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:02,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:02,770 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash -249317709, now seen corresponding path program 1 times [2021-10-24 10:21:02,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:02,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407167382] [2021-10-24 10:21:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:02,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:02,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:02,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:02,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:21:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:02,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:21:02,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:03,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:03,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:03,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407167382] [2021-10-24 10:21:03,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407167382] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:21:03,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [992318907] [2021-10-24 10:21:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:03,272 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:21:03,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:21:03,278 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:21:03,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-24 10:21:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:03,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:21:03,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-24 10:21:03,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-24 10:21:03,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [992318907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:03,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:21:03,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2021-10-24 10:21:03,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810417757] [2021-10-24 10:21:03,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:21:03,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:21:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:21:03,789 INFO L87 Difference]: Start difference. First operand 198 states and 275 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:03,986 INFO L93 Difference]: Finished difference Result 456 states and 644 transitions. [2021-10-24 10:21:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 10:21:03,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-24 10:21:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:03,990 INFO L225 Difference]: With dead ends: 456 [2021-10-24 10:21:03,990 INFO L226 Difference]: Without dead ends: 454 [2021-10-24 10:21:03,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:21:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-24 10:21:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 198. [2021-10-24 10:21:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.385786802030457) internal successors, (273), 197 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 273 transitions. [2021-10-24 10:21:04,015 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 273 transitions. Word has length 40 [2021-10-24 10:21:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:04,016 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 273 transitions. [2021-10-24 10:21:04,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 273 transitions. [2021-10-24 10:21:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-24 10:21:04,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:04,018 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:04,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:04,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:04,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:04,422 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:04,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash -108849228, now seen corresponding path program 1 times [2021-10-24 10:21:04,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:04,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351136227] [2021-10-24 10:21:04,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:04,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:04,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:04,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:04,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:21:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:04,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:21:04,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:21:04,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:21:04,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:04,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351136227] [2021-10-24 10:21:04,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351136227] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:04,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:04,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 10:21:04,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170804012] [2021-10-24 10:21:04,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:21:04,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:21:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:21:04,934 INFO L87 Difference]: Start difference. First operand 198 states and 273 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:05,026 INFO L93 Difference]: Finished difference Result 610 states and 837 transitions. [2021-10-24 10:21:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:21:05,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-24 10:21:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:05,031 INFO L225 Difference]: With dead ends: 610 [2021-10-24 10:21:05,031 INFO L226 Difference]: Without dead ends: 418 [2021-10-24 10:21:05,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:21:05,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-24 10:21:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 207. [2021-10-24 10:21:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3689320388349515) internal successors, (282), 206 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 282 transitions. [2021-10-24 10:21:05,062 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 282 transitions. Word has length 47 [2021-10-24 10:21:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:05,063 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 282 transitions. [2021-10-24 10:21:05,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 282 transitions. [2021-10-24 10:21:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-24 10:21:05,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:05,068 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:05,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:05,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:05,283 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:05,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:05,283 INFO L82 PathProgramCache]: Analyzing trace with hash -618322318, now seen corresponding path program 1 times [2021-10-24 10:21:05,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:05,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981560222] [2021-10-24 10:21:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:05,284 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:05,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:05,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:05,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:21:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:05,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:21:05,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:21:05,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:21:05,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:05,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981560222] [2021-10-24 10:21:05,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981560222] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:05,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:05,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:21:05,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071971508] [2021-10-24 10:21:05,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:21:05,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:05,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:21:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:21:05,804 INFO L87 Difference]: Start difference. First operand 207 states and 282 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:05,879 INFO L93 Difference]: Finished difference Result 542 states and 741 transitions. [2021-10-24 10:21:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:21:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-24 10:21:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:05,882 INFO L225 Difference]: With dead ends: 542 [2021-10-24 10:21:05,882 INFO L226 Difference]: Without dead ends: 341 [2021-10-24 10:21:05,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:21:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-24 10:21:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 180. [2021-10-24 10:21:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.3519553072625698) internal successors, (242), 179 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 242 transitions. [2021-10-24 10:21:05,920 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 242 transitions. Word has length 47 [2021-10-24 10:21:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:05,921 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 242 transitions. [2021-10-24 10:21:05,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 242 transitions. [2021-10-24 10:21:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-24 10:21:05,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:05,923 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:05,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:06,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:06,136 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:06,136 INFO L82 PathProgramCache]: Analyzing trace with hash -423849614, now seen corresponding path program 1 times [2021-10-24 10:21:06,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:06,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33074851] [2021-10-24 10:21:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:06,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:06,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:06,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:06,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:21:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:06,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:21:06,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:21:06,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:21:06,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:21:06,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33074851] [2021-10-24 10:21:06,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33074851] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:21:06,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [901684343] [2021-10-24 10:21:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:06,865 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:21:06,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:21:06,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:21:06,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-24 10:21:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:07,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:21:07,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:21:07,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:21:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [901684343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:21:07,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327020670] [2021-10-24 10:21:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:07,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:21:07,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:21:07,578 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:21:07,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-24 10:21:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:07,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:21:07,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:21:08,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:21:08,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327020670] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:21:08,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 10:21:08,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-24 10:21:08,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112817629] [2021-10-24 10:21:08,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:21:08,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:21:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:21:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:21:08,242 INFO L87 Difference]: Start difference. First operand 180 states and 242 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:10,027 INFO L93 Difference]: Finished difference Result 1066 states and 1487 transitions. [2021-10-24 10:21:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-24 10:21:10,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-24 10:21:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:10,034 INFO L225 Difference]: With dead ends: 1066 [2021-10-24 10:21:10,034 INFO L226 Difference]: Without dead ends: 933 [2021-10-24 10:21:10,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 309.0ms TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-24 10:21:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-10-24 10:21:10,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 300. [2021-10-24 10:21:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.37123745819398) internal successors, (410), 299 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 410 transitions. [2021-10-24 10:21:10,094 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 410 transitions. Word has length 48 [2021-10-24 10:21:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:10,095 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 410 transitions. [2021-10-24 10:21:10,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 410 transitions. [2021-10-24 10:21:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-24 10:21:10,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:10,097 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-24 10:21:10,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:10,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:10,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:10,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:21:10,714 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:21:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:10,714 INFO L82 PathProgramCache]: Analyzing trace with hash -568509983, now seen corresponding path program 2 times [2021-10-24 10:21:10,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:21:10,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778510772] [2021-10-24 10:21:10,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 10:21:10,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:21:10,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:21:10,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:21:10,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-24 10:21:11,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 10:21:11,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-24 10:21:11,987 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:21:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:21:13,032 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:21:13,032 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:21:13,033 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:21:13,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:21:13,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:21:13,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:13,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:21:13,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:21:13,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:21:13 BoogieIcfgContainer [2021-10-24 10:21:13,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:21:13,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:21:13,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:21:13,471 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:21:13,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:58" (3/4) ... [2021-10-24 10:21:13,480 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:21:13,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:21:13,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:21:13,649 INFO L168 Benchmark]: Toolchain (without parser) took 18033.72 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 50.2 MB in the beginning and 60.1 MB in the end (delta: -9.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:21:13,650 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:21:13,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.69 ms. Allocated memory is still 73.4 MB. Free memory was 49.9 MB in the beginning and 41.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:21:13,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.84 ms. Allocated memory is still 73.4 MB. Free memory was 41.7 MB in the beginning and 38.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:21:13,651 INFO L168 Benchmark]: Boogie Preprocessor took 56.14 ms. Allocated memory is still 73.4 MB. Free memory was 38.6 MB in the beginning and 55.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:21:13,651 INFO L168 Benchmark]: RCFGBuilder took 2485.92 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 55.3 MB in the beginning and 63.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:21:13,652 INFO L168 Benchmark]: TraceAbstraction took 14631.28 ms. Allocated memory is still 88.1 MB. Free memory was 63.4 MB in the beginning and 44.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:21:13,652 INFO L168 Benchmark]: Witness Printer took 176.44 ms. Allocated memory is still 88.1 MB. Free memory was 44.1 MB in the beginning and 60.1 MB in the end (delta: -16.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:21:13,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 34.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 594.69 ms. Allocated memory is still 73.4 MB. Free memory was 49.9 MB in the beginning and 41.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.84 ms. Allocated memory is still 73.4 MB. Free memory was 41.7 MB in the beginning and 38.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.14 ms. Allocated memory is still 73.4 MB. Free memory was 38.6 MB in the beginning and 55.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2485.92 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 55.3 MB in the beginning and 63.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14631.28 ms. Allocated memory is still 88.1 MB. Free memory was 63.4 MB in the beginning and 44.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. * Witness Printer took 176.44 ms. Allocated memory is still 88.1 MB. Free memory was 44.1 MB in the beginning and 60.1 MB in the end (delta: -16.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 320]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L130] int pumpRunning = 0; [L131] int systemActive = 1; [L325] int cleanupTimeShifts = 4; [L425] int waterLevel = 1; [L426] int methaneLevelCritical = 0; [L723] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] int retValue_acc ; [L402] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L545] int retValue_acc ; [L548] retValue_acc = 1 [L549] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L408] tmp = valid_product() [L410] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L443] COND TRUE waterLevel < 2 [L444] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L145] COND TRUE \read(systemActive) [L167] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] COND TRUE ! pumpRunning [L282] int retValue_acc ; [L283] int tmp ; [L284] int tmp___0 ; [L505] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L508] COND FALSE !(waterLevel < 2) [L512] retValue_acc = 0 [L513] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L288] tmp = isHighWaterSensorDry() [L290] COND FALSE !(\read(tmp)) [L293] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L295] retValue_acc = tmp___0 [L296] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] tmp = isHighWaterLevel() [L174] COND TRUE \read(tmp) [L201] int tmp ; [L226] int retValue_acc ; [L464] int retValue_acc ; [L467] retValue_acc = methaneLevelCritical [L468] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L230] retValue_acc = isMethaneLevelCritical() [L232] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L205] tmp = isMethaneAlarm() [L207] COND FALSE !(\read(tmp)) [L195] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L138] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L431] COND TRUE waterLevel > 0 [L432] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L145] COND TRUE \read(systemActive) [L167] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L138] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L431] COND TRUE waterLevel > 0 [L432] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L145] COND TRUE \read(systemActive) [L167] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L926] tmp = getWaterLevel() [L928] COND TRUE tmp == 0 [L237] int retValue_acc ; [L240] retValue_acc = pumpRunning [L241] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L930] tmp___0 = isPumpRunning() [L932] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L320] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 320]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 320]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14353.9ms, OverallIterations: 10, TraceHistogramMax: 3, EmptinessCheckTime: 29.2ms, AutomataDifference: 2692.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 782 SDtfs, 1808 SDslu, 2014 SDs, 0 SdLazy, 328 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1541.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 857 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 609.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=9, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 277.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 1571 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 309.3ms SsaConstructionTime, 2282.0ms SatisfiabilityAnalysisTime, 3078.1ms InterpolantComputationTime, 484 NumberOfCodeBlocks, 484 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 818 ConstructedInterpolants, 0 QuantifiedInterpolants, 1875 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2571 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 16 PerfectInterpolantSequences, 132/196 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 10:21:13,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8ef080-b3e1-4eb8-a4c2-4d143f0af03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...