./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH --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 b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:29:14,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:29:14,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:29:14,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:29:14,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:29:14,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:29:14,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:29:14,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:29:14,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:29:14,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:29:14,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:29:14,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:29:14,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:29:14,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:29:14,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:29:14,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:29:14,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:29:14,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:29:14,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:29:14,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:29:14,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:29:14,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:29:14,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:29:14,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:29:14,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:29:14,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:29:14,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:29:14,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:29:14,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:29:14,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:29:14,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:29:14,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:29:14,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:29:14,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:29:14,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:29:14,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:29:14,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:29:14,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:29:14,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:29:14,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:29:14,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:29:14,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:29:14,188 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:29:14,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:29:14,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:29:14,190 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:29:14,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:29:14,191 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:29:14,192 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:29:14,192 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:29:14,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:29:14,193 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:29:14,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:29:14,193 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:29:14,193 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:29:14,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:29:14,194 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:29:14,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:29:14,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:29:14,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:29:14,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:29:14,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:29:14,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:29:14,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:29:14,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:29:14,197 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:29:14,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:29:14,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:29:14,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:29:14,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:29:14,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:29:14,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:29:14,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:29:14,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:29:14,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:29:14,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:29:14,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:29:14,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:29:14,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:29:14,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:29:14,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:29:14,201 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_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd [2021-11-03 05:29:14,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:29:14,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:29:14,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:29:14,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:29:14,542 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:29:14,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2021-11-03 05:29:14,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/68e60b70b/31a490b3eb5142fd9d3e0b80f2587444/FLAGec4abba75 [2021-11-03 05:29:15,343 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:29:15,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2021-11-03 05:29:15,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/68e60b70b/31a490b3eb5142fd9d3e0b80f2587444/FLAGec4abba75 [2021-11-03 05:29:15,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/68e60b70b/31a490b3eb5142fd9d3e0b80f2587444 [2021-11-03 05:29:15,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:29:15,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:29:15,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:29:15,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:29:15,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:29:15,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:29:15" (1/1) ... [2021-11-03 05:29:15,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd852b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:15, skipping insertion in model container [2021-11-03 05:29:15,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:29:15" (1/1) ... [2021-11-03 05:29:15,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:29:15,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:29:16,150 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_3134beee-dac8-42e3-a7c2-69b620850558/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2021-11-03 05:29:16,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:29:16,290 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) [2021-11-03 05:29:16,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45c186ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:16, skipping insertion in model container [2021-11-03 05:29:16,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:29:16,292 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:29:16,295 INFO L168 Benchmark]: Toolchain (without parser) took 806.87 ms. Allocated memory is still 119.5 MB. Free memory was 79.1 MB in the beginning and 80.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:29:16,297 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory was 98.4 MB in the beginning and 98.3 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:29:16,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 800.54 ms. Allocated memory is still 119.5 MB. Free memory was 78.9 MB in the beginning and 80.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:29:16,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory was 98.4 MB in the beginning and 98.3 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 800.54 ms. Allocated memory is still 119.5 MB. Free memory was 78.9 MB in the beginning and 80.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 115]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH --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 b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:29:18,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:29:18,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:29:18,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:29:18,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:29:18,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:29:18,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:29:18,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:29:18,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:29:18,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:29:18,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:29:18,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:29:18,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:29:18,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:29:18,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:29:18,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:29:18,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:29:18,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:29:18,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:29:18,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:29:18,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:29:18,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:29:18,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:29:18,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:29:19,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:29:19,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:29:19,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:29:19,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:29:19,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:29:19,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:29:19,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:29:19,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:29:19,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:29:19,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:29:19,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:29:19,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:29:19,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:29:19,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:29:19,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:29:19,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:29:19,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:29:19,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:29:19,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:29:19,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:29:19,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:29:19,087 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:29:19,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:29:19,088 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:29:19,088 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:29:19,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:29:19,088 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:29:19,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:29:19,092 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:29:19,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:29:19,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:29:19,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:29:19,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:29:19,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:29:19,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:29:19,093 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:29:19,094 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:29:19,094 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:29:19,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:29:19,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:29:19,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:29:19,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:29:19,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:29:19,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:29:19,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:29:19,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:29:19,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:29:19,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:29:19,097 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:29:19,097 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:29:19,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:29:19,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:29:19,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:29:19,098 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_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd [2021-11-03 05:29:19,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:29:19,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:29:19,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:29:19,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:29:19,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:29:19,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2021-11-03 05:29:19,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/ff89e4fa4/2f99d72aff97465bbd1622b5a9c54dbc/FLAG2dad2609e [2021-11-03 05:29:20,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:29:20,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2021-11-03 05:29:20,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/ff89e4fa4/2f99d72aff97465bbd1622b5a9c54dbc/FLAG2dad2609e [2021-11-03 05:29:20,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/data/ff89e4fa4/2f99d72aff97465bbd1622b5a9c54dbc [2021-11-03 05:29:20,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:29:20,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:29:20,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:29:20,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:29:20,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:29:20,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:29:20" (1/1) ... [2021-11-03 05:29:20,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c34df39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:20, skipping insertion in model container [2021-11-03 05:29:20,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:29:20" (1/1) ... [2021-11-03 05:29:20,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:29:20,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:29:21,319 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_3134beee-dac8-42e3-a7c2-69b620850558/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2021-11-03 05:29:21,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:29:21,482 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:29:21,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:29:21,590 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_3134beee-dac8-42e3-a7c2-69b620850558/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2021-11-03 05:29:21,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:29:21,642 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:29:21,758 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_3134beee-dac8-42e3-a7c2-69b620850558/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2021-11-03 05:29:21,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:29:21,836 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:29:21,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21 WrapperNode [2021-11-03 05:29:21,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:29:21,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:29:21,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:29:21,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:29:21,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:21,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:29:22,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:29:22,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:29:22,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:29:22,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:29:22,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:29:22,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:29:22,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:29:22,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (1/1) ... [2021-11-03 05:29:22,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:29:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:29:22,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:29:22,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:29:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:29:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:29:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:29:22,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:29:35,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:29:35,470 INFO L299 CfgBuilder]: Removed 773 assume(true) statements. [2021-11-03 05:29:35,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:29:35 BoogieIcfgContainer [2021-11-03 05:29:35,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:29:35,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:29:35,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:29:35,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:29:35,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:29:20" (1/3) ... [2021-11-03 05:29:35,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255dae29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:29:35, skipping insertion in model container [2021-11-03 05:29:35,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:29:21" (2/3) ... [2021-11-03 05:29:35,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255dae29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:29:35, skipping insertion in model container [2021-11-03 05:29:35,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:29:35" (3/3) ... [2021-11-03 05:29:35,488 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2021-11-03 05:29:35,494 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:29:35,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 05:29:35,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:29:35,588 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 [2021-11-03 05:29:35,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 05:29:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 3458 states, 3452 states have (on average 1.895422943221321) internal successors, (6543), 3457 states have internal predecessors, (6543), 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) [2021-11-03 05:29:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 05:29:35,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:35,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:35,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 769548685, now seen corresponding path program 1 times [2021-11-03 05:29:35,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:35,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884090618] [2021-11-03 05:29:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:35,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:35,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:35,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:35,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:29:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:36,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:29:36,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:36,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:36,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:36,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884090618] [2021-11-03 05:29:36,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884090618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:36,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:36,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:29:36,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171621389] [2021-11-03 05:29:36,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:29:36,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:29:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:29:36,671 INFO L87 Difference]: Start difference. First operand has 3458 states, 3452 states have (on average 1.895422943221321) internal successors, (6543), 3457 states have internal predecessors, (6543), 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 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-03 05:29:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:36,837 INFO L93 Difference]: Finished difference Result 3477 states and 6566 transitions. [2021-11-03 05:29:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:29:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2021-11-03 05:29:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:36,900 INFO L225 Difference]: With dead ends: 3477 [2021-11-03 05:29:36,901 INFO L226 Difference]: Without dead ends: 3454 [2021-11-03 05:29:36,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:29:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2021-11-03 05:29:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3454. [2021-11-03 05:29:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3449 states have (on average 1.8935923456074224) internal successors, (6531), 3453 states have internal predecessors, (6531), 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) [2021-11-03 05:29:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 6531 transitions. [2021-11-03 05:29:37,122 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 6531 transitions. Word has length 43 [2021-11-03 05:29:37,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:37,123 INFO L470 AbstractCegarLoop]: Abstraction has 3454 states and 6531 transitions. [2021-11-03 05:29:37,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-03 05:29:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 6531 transitions. [2021-11-03 05:29:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 05:29:37,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:37,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:37,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:29:37,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:37,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:37,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash 549766076, now seen corresponding path program 1 times [2021-11-03 05:29:37,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:37,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666294162] [2021-11-03 05:29:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:37,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:37,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:37,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:37,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:29:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:29:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:37,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:38,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:38,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666294162] [2021-11-03 05:29:38,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666294162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:38,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:38,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:29:38,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33585559] [2021-11-03 05:29:38,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:29:38,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:29:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:29:38,083 INFO L87 Difference]: Start difference. First operand 3454 states and 6531 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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) [2021-11-03 05:29:38,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:38,311 INFO L93 Difference]: Finished difference Result 6895 states and 13043 transitions. [2021-11-03 05:29:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:29:38,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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 45 [2021-11-03 05:29:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:38,429 INFO L225 Difference]: With dead ends: 6895 [2021-11-03 05:29:38,430 INFO L226 Difference]: Without dead ends: 3454 [2021-11-03 05:29:38,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:29:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2021-11-03 05:29:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3454. [2021-11-03 05:29:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3449 states have (on average 1.8918527109307046) internal successors, (6525), 3453 states have internal predecessors, (6525), 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) [2021-11-03 05:29:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 6525 transitions. [2021-11-03 05:29:38,581 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 6525 transitions. Word has length 45 [2021-11-03 05:29:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:38,582 INFO L470 AbstractCegarLoop]: Abstraction has 3454 states and 6525 transitions. [2021-11-03 05:29:38,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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) [2021-11-03 05:29:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 6525 transitions. [2021-11-03 05:29:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:29:38,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:38,588 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:38,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:29:38,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:38,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1200800142, now seen corresponding path program 1 times [2021-11-03 05:29:38,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:38,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690563041] [2021-11-03 05:29:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:38,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:38,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:38,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:29:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:39,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:29:39,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:39,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:39,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:39,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690563041] [2021-11-03 05:29:39,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690563041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:39,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:39,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:29:39,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065071966] [2021-11-03 05:29:39,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:29:39,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:29:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:29:39,733 INFO L87 Difference]: Start difference. First operand 3454 states and 6525 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-03 05:29:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:40,044 INFO L93 Difference]: Finished difference Result 6859 states and 12966 transitions. [2021-11-03 05:29:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:29:40,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 50 [2021-11-03 05:29:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:40,072 INFO L225 Difference]: With dead ends: 6859 [2021-11-03 05:29:40,072 INFO L226 Difference]: Without dead ends: 3427 [2021-11-03 05:29:40,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:29:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2021-11-03 05:29:40,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 3427. [2021-11-03 05:29:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3422 states have (on average 1.8904149620105202) internal successors, (6469), 3426 states have internal predecessors, (6469), 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) [2021-11-03 05:29:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 6469 transitions. [2021-11-03 05:29:40,333 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 6469 transitions. Word has length 50 [2021-11-03 05:29:40,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:40,333 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 6469 transitions. [2021-11-03 05:29:40,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-03 05:29:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 6469 transitions. [2021-11-03 05:29:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:29:40,341 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:40,341 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:40,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:40,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:40,560 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1421538448, now seen corresponding path program 1 times [2021-11-03 05:29:40,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:40,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314321850] [2021-11-03 05:29:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:40,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:40,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:40,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:40,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:29:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:41,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:29:41,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:41,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:41,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:41,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314321850] [2021-11-03 05:29:41,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314321850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:41,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:41,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:29:41,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759883661] [2021-11-03 05:29:41,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:29:41,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:41,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:29:41,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:29:41,429 INFO L87 Difference]: Start difference. First operand 3427 states and 6469 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2021-11-03 05:29:41,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:41,683 INFO L93 Difference]: Finished difference Result 6832 states and 12910 transitions. [2021-11-03 05:29:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:29:41,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) Word has length 51 [2021-11-03 05:29:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:41,711 INFO L225 Difference]: With dead ends: 6832 [2021-11-03 05:29:41,711 INFO L226 Difference]: Without dead ends: 3427 [2021-11-03 05:29:41,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:29:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2021-11-03 05:29:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 3427. [2021-11-03 05:29:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3422 states have (on average 1.8886616014026885) internal successors, (6463), 3426 states have internal predecessors, (6463), 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) [2021-11-03 05:29:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 6463 transitions. [2021-11-03 05:29:41,931 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 6463 transitions. Word has length 51 [2021-11-03 05:29:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:41,932 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 6463 transitions. [2021-11-03 05:29:41,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2021-11-03 05:29:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 6463 transitions. [2021-11-03 05:29:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 05:29:41,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:41,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:41,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:42,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:42,153 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:42,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1156825951, now seen corresponding path program 1 times [2021-11-03 05:29:42,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:42,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473253977] [2021-11-03 05:29:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:42,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:42,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:42,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:42,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:29:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:42,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:29:42,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:42,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:43,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:43,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473253977] [2021-11-03 05:29:43,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473253977] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:43,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:43,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:29:43,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009053476] [2021-11-03 05:29:43,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:29:43,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:29:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:43,051 INFO L87 Difference]: Start difference. First operand 3427 states and 6463 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:43,368 INFO L93 Difference]: Finished difference Result 6826 states and 12893 transitions. [2021-11-03 05:29:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:29:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 05:29:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:43,393 INFO L225 Difference]: With dead ends: 6826 [2021-11-03 05:29:43,393 INFO L226 Difference]: Without dead ends: 3424 [2021-11-03 05:29:43,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:29:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2021-11-03 05:29:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 3424. [2021-11-03 05:29:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3419 states have (on average 1.8879789412108803) internal successors, (6455), 3423 states have internal predecessors, (6455), 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) [2021-11-03 05:29:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 6455 transitions. [2021-11-03 05:29:43,663 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 6455 transitions. Word has length 56 [2021-11-03 05:29:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:43,663 INFO L470 AbstractCegarLoop]: Abstraction has 3424 states and 6455 transitions. [2021-11-03 05:29:43,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 6455 transitions. [2021-11-03 05:29:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 05:29:43,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:43,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:43,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:43,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:43,884 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:43,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1181031537, now seen corresponding path program 1 times [2021-11-03 05:29:43,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:43,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633880472] [2021-11-03 05:29:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:43,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:43,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:43,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:43,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:29:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:44,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:29:44,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:44,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:46,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:46,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633880472] [2021-11-03 05:29:46,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633880472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:46,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:46,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:29:46,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782750000] [2021-11-03 05:29:46,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:29:46,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:46,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:29:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:29:46,125 INFO L87 Difference]: Start difference. First operand 3424 states and 6455 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 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) [2021-11-03 05:29:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:49,556 INFO L93 Difference]: Finished difference Result 11059 states and 20897 transitions. [2021-11-03 05:29:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:29:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 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) Word has length 57 [2021-11-03 05:29:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:49,612 INFO L225 Difference]: With dead ends: 11059 [2021-11-03 05:29:49,612 INFO L226 Difference]: Without dead ends: 7677 [2021-11-03 05:29:49,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:29:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7677 states. [2021-11-03 05:29:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7677 to 4912. [2021-11-03 05:29:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4907 states have (on average 1.8885265946606888) internal successors, (9267), 4911 states have internal predecessors, (9267), 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) [2021-11-03 05:29:49,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 9267 transitions. [2021-11-03 05:29:49,914 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 9267 transitions. Word has length 57 [2021-11-03 05:29:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:49,915 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 9267 transitions. [2021-11-03 05:29:49,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 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) [2021-11-03 05:29:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 9267 transitions. [2021-11-03 05:29:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 05:29:49,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:49,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:49,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:50,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:50,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash 876280243, now seen corresponding path program 1 times [2021-11-03 05:29:50,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:50,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461511946] [2021-11-03 05:29:50,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:50,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:50,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:50,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:50,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:29:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:50,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:29:50,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:50,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:51,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:51,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461511946] [2021-11-03 05:29:51,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461511946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:51,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:51,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:29:51,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993984340] [2021-11-03 05:29:51,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:29:51,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:29:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:29:51,219 INFO L87 Difference]: Start difference. First operand 4912 states and 9267 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-03 05:29:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:56,567 INFO L93 Difference]: Finished difference Result 20922 states and 39329 transitions. [2021-11-03 05:29:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:29:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-11-03 05:29:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:56,618 INFO L225 Difference]: With dead ends: 20922 [2021-11-03 05:29:56,618 INFO L226 Difference]: Without dead ends: 16051 [2021-11-03 05:29:56,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16051 states. [2021-11-03 05:29:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16051 to 4918. [2021-11-03 05:29:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4918 states, 4913 states have (on average 1.8874414817830247) internal successors, (9273), 4917 states have internal predecessors, (9273), 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) [2021-11-03 05:29:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 9273 transitions. [2021-11-03 05:29:57,104 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 9273 transitions. Word has length 58 [2021-11-03 05:29:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:57,105 INFO L470 AbstractCegarLoop]: Abstraction has 4918 states and 9273 transitions. [2021-11-03 05:29:57,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-03 05:29:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 9273 transitions. [2021-11-03 05:29:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:29:57,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:57,109 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-03 05:29:57,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:57,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:57,331 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:29:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1455966669, now seen corresponding path program 1 times [2021-11-03 05:29:57,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:57,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671985469] [2021-11-03 05:29:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:57,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:57,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:57,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:57,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:29:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:57,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:29:57,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:58,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:58,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:58,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671985469] [2021-11-03 05:29:58,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671985469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:58,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:58,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:29:58,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703801015] [2021-11-03 05:29:58,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:29:58,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:29:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:29:58,285 INFO L87 Difference]: Start difference. First operand 4918 states and 9273 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2021-11-03 05:30:09,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:09,785 INFO L93 Difference]: Finished difference Result 16854 states and 31748 transitions. [2021-11-03 05:30:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:30:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 59 [2021-11-03 05:30:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:09,817 INFO L225 Difference]: With dead ends: 16854 [2021-11-03 05:30:09,818 INFO L226 Difference]: Without dead ends: 13506 [2021-11-03 05:30:09,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:30:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2021-11-03 05:30:10,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 8480. [2021-11-03 05:30:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8480 states, 8475 states have (on average 1.8841297935103245) internal successors, (15968), 8479 states have internal predecessors, (15968), 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) [2021-11-03 05:30:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 15968 transitions. [2021-11-03 05:30:10,481 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 15968 transitions. Word has length 59 [2021-11-03 05:30:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:10,482 INFO L470 AbstractCegarLoop]: Abstraction has 8480 states and 15968 transitions. [2021-11-03 05:30:10,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2021-11-03 05:30:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 15968 transitions. [2021-11-03 05:30:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 05:30:10,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:10,489 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-03 05:30:10,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:30:10,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:30:10,704 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:30:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash 579976300, now seen corresponding path program 1 times [2021-11-03 05:30:10,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:30:10,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845317296] [2021-11-03 05:30:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:10,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:30:10,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:30:10,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:30:10,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:30:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:11,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:30:11,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:11,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:11,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:30:11,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845317296] [2021-11-03 05:30:11,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845317296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:11,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:11,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:30:11,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718703947] [2021-11-03 05:30:11,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:30:11,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:30:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:30:11,671 INFO L87 Difference]: Start difference. First operand 8480 states and 15968 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-03 05:30:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:15,833 INFO L93 Difference]: Finished difference Result 20246 states and 37915 transitions. [2021-11-03 05:30:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:30:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-03 05:30:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:15,871 INFO L225 Difference]: With dead ends: 20246 [2021-11-03 05:30:15,871 INFO L226 Difference]: Without dead ends: 13310 [2021-11-03 05:30:15,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:30:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13310 states. [2021-11-03 05:30:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13310 to 8457. [2021-11-03 05:30:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8457 states, 8452 states have (on average 1.851159488878372) internal successors, (15646), 8456 states have internal predecessors, (15646), 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) [2021-11-03 05:30:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8457 states to 8457 states and 15646 transitions. [2021-11-03 05:30:16,485 INFO L78 Accepts]: Start accepts. Automaton has 8457 states and 15646 transitions. Word has length 60 [2021-11-03 05:30:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:16,485 INFO L470 AbstractCegarLoop]: Abstraction has 8457 states and 15646 transitions. [2021-11-03 05:30:16,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-03 05:30:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8457 states and 15646 transitions. [2021-11-03 05:30:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 05:30:16,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:16,493 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-03 05:30:16,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:30:16,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:30:16,707 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:30:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1136083557, now seen corresponding path program 1 times [2021-11-03 05:30:16,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:30:16,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882679885] [2021-11-03 05:30:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:16,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:30:16,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:30:16,710 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:30:16,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:30:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:17,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:30:17,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:17,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:17,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:30:17,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882679885] [2021-11-03 05:30:17,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882679885] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:17,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:17,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:30:17,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006591455] [2021-11-03 05:30:17,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:30:17,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:30:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:30:17,714 INFO L87 Difference]: Start difference. First operand 8457 states and 15646 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-03 05:30:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:20,090 INFO L93 Difference]: Finished difference Result 57174 states and 106233 transitions. [2021-11-03 05:30:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:30:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-03 05:30:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:20,191 INFO L225 Difference]: With dead ends: 57174 [2021-11-03 05:30:20,192 INFO L226 Difference]: Without dead ends: 48754 [2021-11-03 05:30:20,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:30:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48754 states. [2021-11-03 05:30:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48754 to 13196. [2021-11-03 05:30:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13196 states, 13191 states have (on average 1.853536502160564) internal successors, (24450), 13195 states have internal predecessors, (24450), 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) [2021-11-03 05:30:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13196 states to 13196 states and 24450 transitions. [2021-11-03 05:30:21,296 INFO L78 Accepts]: Start accepts. Automaton has 13196 states and 24450 transitions. Word has length 61 [2021-11-03 05:30:21,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:21,297 INFO L470 AbstractCegarLoop]: Abstraction has 13196 states and 24450 transitions. [2021-11-03 05:30:21,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-03 05:30:21,297 INFO L276 IsEmpty]: Start isEmpty. Operand 13196 states and 24450 transitions. [2021-11-03 05:30:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 05:30:21,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:21,301 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-03 05:30:21,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:30:21,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:30:21,520 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:30:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1558392228, now seen corresponding path program 1 times [2021-11-03 05:30:21,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:30:21,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782905571] [2021-11-03 05:30:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:21,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:30:21,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:30:21,523 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:30:21,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:30:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:22,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:30:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:22,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:22,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:30:22,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782905571] [2021-11-03 05:30:22,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782905571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:22,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:22,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:30:22,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446487696] [2021-11-03 05:30:22,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:30:22,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:30:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:22,502 INFO L87 Difference]: Start difference. First operand 13196 states and 24450 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-03 05:30:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:23,478 INFO L93 Difference]: Finished difference Result 33945 states and 62953 transitions. [2021-11-03 05:30:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:30:23,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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 62 [2021-11-03 05:30:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:23,627 INFO L225 Difference]: With dead ends: 33945 [2021-11-03 05:30:23,628 INFO L226 Difference]: Without dead ends: 22578 [2021-11-03 05:30:23,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22578 states. [2021-11-03 05:30:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22578 to 22563. [2021-11-03 05:30:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22563 states, 22558 states have (on average 1.854730029257913) internal successors, (41839), 22562 states have internal predecessors, (41839), 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) [2021-11-03 05:30:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22563 states to 22563 states and 41839 transitions. [2021-11-03 05:30:24,700 INFO L78 Accepts]: Start accepts. Automaton has 22563 states and 41839 transitions. Word has length 62 [2021-11-03 05:30:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:24,700 INFO L470 AbstractCegarLoop]: Abstraction has 22563 states and 41839 transitions. [2021-11-03 05:30:24,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-03 05:30:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 22563 states and 41839 transitions. [2021-11-03 05:30:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 05:30:24,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:24,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:30:24,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:30:24,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:30:24,918 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:30:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash -623685300, now seen corresponding path program 1 times [2021-11-03 05:30:24,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:30:24,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816165410] [2021-11-03 05:30:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:24,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:30:24,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:30:24,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:30:24,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:30:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:25,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:30:25,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:25,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:26,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:30:26,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816165410] [2021-11-03 05:30:26,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816165410] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:26,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:26,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:30:26,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430121889] [2021-11-03 05:30:26,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:30:26,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:26,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:30:26,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:26,052 INFO L87 Difference]: Start difference. First operand 22563 states and 41839 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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) [2021-11-03 05:30:28,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:28,152 INFO L93 Difference]: Finished difference Result 60733 states and 112658 transitions. [2021-11-03 05:30:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:30:28,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 63 [2021-11-03 05:30:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:28,214 INFO L225 Difference]: With dead ends: 60733 [2021-11-03 05:30:28,214 INFO L226 Difference]: Without dead ends: 41116 [2021-11-03 05:30:28,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41116 states. [2021-11-03 05:30:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41116 to 41101. [2021-11-03 05:30:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41101 states, 41096 states have (on average 1.8549980533385244) internal successors, (76233), 41100 states have internal predecessors, (76233), 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) [2021-11-03 05:30:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41101 states to 41101 states and 76233 transitions. [2021-11-03 05:30:30,197 INFO L78 Accepts]: Start accepts. Automaton has 41101 states and 76233 transitions. Word has length 63 [2021-11-03 05:30:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:30,198 INFO L470 AbstractCegarLoop]: Abstraction has 41101 states and 76233 transitions. [2021-11-03 05:30:30,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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) [2021-11-03 05:30:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 41101 states and 76233 transitions. [2021-11-03 05:30:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:30:30,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:30,201 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:30:30,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-03 05:30:30,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:30:30,416 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:30:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:30,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1914724119, now seen corresponding path program 1 times [2021-11-03 05:30:30,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:30:30,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457561218] [2021-11-03 05:30:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:30,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:30:30,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:30:30,420 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:30:30,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:30:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:31,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:30:31,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:31,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:31,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:30:31,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457561218] [2021-11-03 05:30:31,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457561218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:31,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:31,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:30:31,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815320291] [2021-11-03 05:30:31,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:30:31,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:30:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:31,532 INFO L87 Difference]: Start difference. First operand 41101 states and 76233 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2021-11-03 05:30:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:34,865 INFO L93 Difference]: Finished difference Result 113917 states and 211251 transitions. [2021-11-03 05:30:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:30:34,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2021-11-03 05:30:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:34,996 INFO L225 Difference]: With dead ends: 113917 [2021-11-03 05:30:34,996 INFO L226 Difference]: Without dead ends: 77770 [2021-11-03 05:30:35,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77770 states. [2021-11-03 05:30:38,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77770 to 77755. [2021-11-03 05:30:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77755 states, 77750 states have (on average 1.8540836012861737) internal successors, (144155), 77754 states have internal predecessors, (144155), 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) [2021-11-03 05:30:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77755 states to 77755 states and 144155 transitions. [2021-11-03 05:30:39,049 INFO L78 Accepts]: Start accepts. Automaton has 77755 states and 144155 transitions. Word has length 64 [2021-11-03 05:30:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:39,049 INFO L470 AbstractCegarLoop]: Abstraction has 77755 states and 144155 transitions. [2021-11-03 05:30:39,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2021-11-03 05:30:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 77755 states and 144155 transitions. [2021-11-03 05:30:39,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 05:30:39,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:39,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:30:39,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:30:39,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:30:39,253 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:30:39,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1353366735, now seen corresponding path program 1 times [2021-11-03 05:30:39,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:30:39,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043763241] [2021-11-03 05:30:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:30:39,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:30:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:30:39,256 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:30:39,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3134beee-dac8-42e3-a7c2-69b620850558/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:30:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:40,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:30:40,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:40,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:40,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:30:40,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043763241] [2021-11-03 05:30:40,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043763241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:40,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:40,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:30:40,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116989305] [2021-11-03 05:30:40,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:30:40,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:30:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:40,609 INFO L87 Difference]: Start difference. First operand 77755 states and 144155 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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) [2021-11-03 05:30:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:46,802 INFO L93 Difference]: Finished difference Result 219441 states and 406608 transitions. [2021-11-03 05:30:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:30:46,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 65 [2021-11-03 05:30:46,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:47,089 INFO L225 Difference]: With dead ends: 219441 [2021-11-03 05:30:47,090 INFO L226 Difference]: Without dead ends: 150204 [2021-11-03 05:30:47,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:30:47,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150204 states.