./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8 --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 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8 --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 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:36:38,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:36:38,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:36:38,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:36:38,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:36:38,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:36:38,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:36:38,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:36:38,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:36:39,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:36:39,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:36:39,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:36:39,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:36:39,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:36:39,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:36:39,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:36:39,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:36:39,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:36:39,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:36:39,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:36:39,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:36:39,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:36:39,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:36:39,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:36:39,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:36:39,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:36:39,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:36:39,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:36:39,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:36:39,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:36:39,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:36:39,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:36:39,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:36:39,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:36:39,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:36:39,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:36:39,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:36:39,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:36:39,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:36:39,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:36:39,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:36:39,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:36:39,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:36:39,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:36:39,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:36:39,121 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:36:39,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:36:39,122 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:36:39,122 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:36:39,122 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:36:39,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:36:39,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:36:39,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:36:39,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:36:39,125 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:36:39,125 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:36:39,125 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:36:39,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:36:39,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:36:39,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:36:39,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:36:39,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:36:39,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:36:39,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:36:39,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:36:39,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:36:39,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:36:39,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:36:39,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:36:39,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:36:39,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:36:39,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:36:39,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:36:39,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:36:39,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:36:39,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:36:39,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:36:39,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:36:39,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:36:39,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:36:39,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:36:39,135 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_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf [2021-10-13 07:36:39,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:36:39,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:36:39,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:36:39,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:36:39,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:36:39,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-13 07:36:39,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/901b45647/bcd0a65d7ada47ecb902b71282f9aee8/FLAG49669ae26 [2021-10-13 07:36:40,325 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:36:40,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-13 07:36:40,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/901b45647/bcd0a65d7ada47ecb902b71282f9aee8/FLAG49669ae26 [2021-10-13 07:36:40,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/901b45647/bcd0a65d7ada47ecb902b71282f9aee8 [2021-10-13 07:36:40,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:36:40,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:36:40,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:40,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:36:40,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:36:40,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:40" (1/1) ... [2021-10-13 07:36:40,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431c1f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:40, skipping insertion in model container [2021-10-13 07:36:40,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:40" (1/1) ... [2021-10-13 07:36:40,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:36:40,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:36:41,061 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_ad4274ab-c45b-41c2-a21e-051734dc0a82/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-13 07:36:41,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:41,082 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:36:41,227 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_ad4274ab-c45b-41c2-a21e-051734dc0a82/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-13 07:36:41,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:41,260 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:36:41,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41 WrapperNode [2021-10-13 07:36:41,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:41,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:36:41,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:36:41,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:36:41,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:36:41,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:36:41,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:36:41,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:36:41,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:36:41,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:36:41,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:36:41,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:36:41,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (1/1) ... [2021-10-13 07:36:41,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:36:41,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:36:41,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:36:41,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:36:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:36:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:36:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:36:41,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:36:43,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:36:43,815 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-13 07:36:43,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:43 BoogieIcfgContainer [2021-10-13 07:36:43,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:36:43,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:36:43,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:36:43,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:36:43,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:40" (1/3) ... [2021-10-13 07:36:43,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49664d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:43, skipping insertion in model container [2021-10-13 07:36:43,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:41" (2/3) ... [2021-10-13 07:36:43,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49664d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:43, skipping insertion in model container [2021-10-13 07:36:43,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:43" (3/3) ... [2021-10-13 07:36:43,838 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-13 07:36:43,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:36:43,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-13 07:36:43,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:36:43,932 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:36:43,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-13 07:36:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 208 states have (on average 1.7259615384615385) internal successors, (359), 231 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:43,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:36:43,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:43,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:43,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:43,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:44,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1906724974, now seen corresponding path program 1 times [2021-10-13 07:36:44,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:44,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974306821] [2021-10-13 07:36:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:44,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:44,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:44,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974306821] [2021-10-13 07:36:44,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974306821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:44,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:44,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:44,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433867532] [2021-10-13 07:36:44,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:44,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:44,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:44,509 INFO L87 Difference]: Start difference. First operand has 232 states, 208 states have (on average 1.7259615384615385) internal successors, (359), 231 states have internal predecessors, (359), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:44,664 INFO L93 Difference]: Finished difference Result 465 states and 720 transitions. [2021-10-13 07:36:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-10-13 07:36:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:44,687 INFO L225 Difference]: With dead ends: 465 [2021-10-13 07:36:44,687 INFO L226 Difference]: Without dead ends: 232 [2021-10-13 07:36:44,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-13 07:36:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 207. [2021-10-13 07:36:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 206 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2021-10-13 07:36:44,774 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 11 [2021-10-13 07:36:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:44,775 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2021-10-13 07:36:44,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2021-10-13 07:36:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:36:44,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:44,777 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:44,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:36:44,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:44,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:44,782 INFO L82 PathProgramCache]: Analyzing trace with hash 214310918, now seen corresponding path program 1 times [2021-10-13 07:36:44,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:44,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896264668] [2021-10-13 07:36:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:44,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:45,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:45,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896264668] [2021-10-13 07:36:45,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896264668] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:45,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:45,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:45,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606278780] [2021-10-13 07:36:45,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:45,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:45,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:45,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,025 INFO L87 Difference]: Start difference. First operand 207 states and 299 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:45,076 INFO L93 Difference]: Finished difference Result 435 states and 630 transitions. [2021-10-13 07:36:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:45,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-10-13 07:36:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:45,083 INFO L225 Difference]: With dead ends: 435 [2021-10-13 07:36:45,084 INFO L226 Difference]: Without dead ends: 229 [2021-10-13 07:36:45,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-13 07:36:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 202. [2021-10-13 07:36:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 184 states have (on average 1.5815217391304348) internal successors, (291), 201 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 291 transitions. [2021-10-13 07:36:45,128 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 291 transitions. Word has length 13 [2021-10-13 07:36:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:45,128 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 291 transitions. [2021-10-13 07:36:45,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 291 transitions. [2021-10-13 07:36:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:36:45,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:45,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:45,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:36:45,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1105514146, now seen corresponding path program 1 times [2021-10-13 07:36:45,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:45,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357705226] [2021-10-13 07:36:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:45,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:45,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:45,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357705226] [2021-10-13 07:36:45,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357705226] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:45,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:45,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:45,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257330665] [2021-10-13 07:36:45,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:45,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,361 INFO L87 Difference]: Start difference. First operand 202 states and 291 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:45,455 INFO L93 Difference]: Finished difference Result 434 states and 629 transitions. [2021-10-13 07:36:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:45,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:36:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:45,458 INFO L225 Difference]: With dead ends: 434 [2021-10-13 07:36:45,459 INFO L226 Difference]: Without dead ends: 233 [2021-10-13 07:36:45,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-10-13 07:36:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 182. [2021-10-13 07:36:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 168 states have (on average 1.5416666666666667) internal successors, (259), 181 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 259 transitions. [2021-10-13 07:36:45,484 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 259 transitions. Word has length 17 [2021-10-13 07:36:45,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:45,484 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 259 transitions. [2021-10-13 07:36:45,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 259 transitions. [2021-10-13 07:36:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:36:45,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:45,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:45,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:36:45,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:45,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1318719946, now seen corresponding path program 1 times [2021-10-13 07:36:45,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:45,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985971017] [2021-10-13 07:36:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:45,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:45,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:45,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985971017] [2021-10-13 07:36:45,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985971017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:45,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:45,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:45,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645200218] [2021-10-13 07:36:45,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:45,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,621 INFO L87 Difference]: Start difference. First operand 182 states and 259 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:45,691 INFO L93 Difference]: Finished difference Result 402 states and 573 transitions. [2021-10-13 07:36:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:45,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-13 07:36:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:45,694 INFO L225 Difference]: With dead ends: 402 [2021-10-13 07:36:45,694 INFO L226 Difference]: Without dead ends: 221 [2021-10-13 07:36:45,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-13 07:36:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2021-10-13 07:36:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 158 states have (on average 1.5253164556962024) internal successors, (241), 169 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 241 transitions. [2021-10-13 07:36:45,705 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 241 transitions. Word has length 21 [2021-10-13 07:36:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:45,705 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 241 transitions. [2021-10-13 07:36:45,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 241 transitions. [2021-10-13 07:36:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:36:45,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:45,708 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:45,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:36:45,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:45,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1939962660, now seen corresponding path program 1 times [2021-10-13 07:36:45,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:45,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603660809] [2021-10-13 07:36:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:45,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:45,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:45,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603660809] [2021-10-13 07:36:45,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603660809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:45,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:45,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:45,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682702181] [2021-10-13 07:36:45,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:45,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,844 INFO L87 Difference]: Start difference. First operand 170 states and 241 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:45,952 INFO L93 Difference]: Finished difference Result 398 states and 565 transitions. [2021-10-13 07:36:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 07:36:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:45,955 INFO L225 Difference]: With dead ends: 398 [2021-10-13 07:36:45,955 INFO L226 Difference]: Without dead ends: 229 [2021-10-13 07:36:45,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-13 07:36:45,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 150. [2021-10-13 07:36:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 142 states have (on average 1.471830985915493) internal successors, (209), 149 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 209 transitions. [2021-10-13 07:36:45,964 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 209 transitions. Word has length 22 [2021-10-13 07:36:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:45,964 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 209 transitions. [2021-10-13 07:36:45,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 209 transitions. [2021-10-13 07:36:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:36:45,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:45,966 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:45,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:36:45,966 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:45,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:45,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1592250678, now seen corresponding path program 1 times [2021-10-13 07:36:45,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:45,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511686472] [2021-10-13 07:36:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:45,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:46,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:46,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511686472] [2021-10-13 07:36:46,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511686472] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:46,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:46,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:36:46,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422014237] [2021-10-13 07:36:46,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:36:46,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:46,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:36:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:36:46,233 INFO L87 Difference]: Start difference. First operand 150 states and 209 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:46,486 INFO L93 Difference]: Finished difference Result 590 states and 818 transitions. [2021-10-13 07:36:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:36:46,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2021-10-13 07:36:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:46,490 INFO L225 Difference]: With dead ends: 590 [2021-10-13 07:36:46,490 INFO L226 Difference]: Without dead ends: 441 [2021-10-13 07:36:46,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:36:46,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-10-13 07:36:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 204. [2021-10-13 07:36:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 196 states have (on average 1.4795918367346939) internal successors, (290), 203 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 290 transitions. [2021-10-13 07:36:46,504 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 290 transitions. Word has length 27 [2021-10-13 07:36:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:46,505 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 290 transitions. [2021-10-13 07:36:46,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 290 transitions. [2021-10-13 07:36:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:36:46,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:46,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:46,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:36:46,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:46,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1436880461, now seen corresponding path program 1 times [2021-10-13 07:36:46,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:46,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901532808] [2021-10-13 07:36:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:46,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:46,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:46,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901532808] [2021-10-13 07:36:46,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901532808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:46,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:46,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:46,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726818588] [2021-10-13 07:36:46,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:46,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:46,586 INFO L87 Difference]: Start difference. First operand 204 states and 290 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:46,640 INFO L93 Difference]: Finished difference Result 438 states and 615 transitions. [2021-10-13 07:36:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:46,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-10-13 07:36:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:46,643 INFO L225 Difference]: With dead ends: 438 [2021-10-13 07:36:46,643 INFO L226 Difference]: Without dead ends: 272 [2021-10-13 07:36:46,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-13 07:36:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 188. [2021-10-13 07:36:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.4505494505494505) internal successors, (264), 187 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2021-10-13 07:36:46,657 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 28 [2021-10-13 07:36:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:46,657 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2021-10-13 07:36:46,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2021-10-13 07:36:46,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:36:46,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:46,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:46,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:36:46,659 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash -557300243, now seen corresponding path program 1 times [2021-10-13 07:36:46,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:46,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319330459] [2021-10-13 07:36:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:46,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:46,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:46,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319330459] [2021-10-13 07:36:46,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319330459] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:46,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:46,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:46,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689738850] [2021-10-13 07:36:46,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:36:46,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:36:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:46,737 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:46,770 INFO L93 Difference]: Finished difference Result 346 states and 487 transitions. [2021-10-13 07:36:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:36:46,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-10-13 07:36:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:46,772 INFO L225 Difference]: With dead ends: 346 [2021-10-13 07:36:46,772 INFO L226 Difference]: Without dead ends: 209 [2021-10-13 07:36:46,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:36:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-13 07:36:46,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 184. [2021-10-13 07:36:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.4357541899441342) internal successors, (257), 183 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 257 transitions. [2021-10-13 07:36:46,782 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 257 transitions. Word has length 28 [2021-10-13 07:36:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:46,782 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 257 transitions. [2021-10-13 07:36:46,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 257 transitions. [2021-10-13 07:36:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:36:46,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:46,784 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:46,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:36:46,784 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:46,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:46,785 INFO L82 PathProgramCache]: Analyzing trace with hash 995102888, now seen corresponding path program 1 times [2021-10-13 07:36:46,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:46,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293994140] [2021-10-13 07:36:46,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:46,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:46,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:46,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293994140] [2021-10-13 07:36:46,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293994140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:46,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:46,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:36:46,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862886097] [2021-10-13 07:36:46,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:36:46,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:36:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:36:46,910 INFO L87 Difference]: Start difference. First operand 184 states and 257 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:47,321 INFO L93 Difference]: Finished difference Result 815 states and 1111 transitions. [2021-10-13 07:36:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:36:47,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 07:36:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:47,327 INFO L225 Difference]: With dead ends: 815 [2021-10-13 07:36:47,327 INFO L226 Difference]: Without dead ends: 664 [2021-10-13 07:36:47,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:36:47,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-13 07:36:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 230. [2021-10-13 07:36:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.4177777777777778) internal successors, (319), 229 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 319 transitions. [2021-10-13 07:36:47,349 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 319 transitions. Word has length 31 [2021-10-13 07:36:47,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:47,349 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 319 transitions. [2021-10-13 07:36:47,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 319 transitions. [2021-10-13 07:36:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:36:47,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:47,351 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:47,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:36:47,351 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:47,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1241577407, now seen corresponding path program 1 times [2021-10-13 07:36:47,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:47,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753762896] [2021-10-13 07:36:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:47,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:47,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:47,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753762896] [2021-10-13 07:36:47,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753762896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:47,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:47,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:36:47,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348189464] [2021-10-13 07:36:47,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:36:47,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:36:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:36:47,462 INFO L87 Difference]: Start difference. First operand 230 states and 319 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:47,695 INFO L93 Difference]: Finished difference Result 796 states and 1088 transitions. [2021-10-13 07:36:47,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:36:47,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 07:36:47,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:47,700 INFO L225 Difference]: With dead ends: 796 [2021-10-13 07:36:47,700 INFO L226 Difference]: Without dead ends: 640 [2021-10-13 07:36:47,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:36:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-13 07:36:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 239. [2021-10-13 07:36:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.4059829059829059) internal successors, (329), 238 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 329 transitions. [2021-10-13 07:36:47,727 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 329 transitions. Word has length 32 [2021-10-13 07:36:47,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:47,727 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 329 transitions. [2021-10-13 07:36:47,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 329 transitions. [2021-10-13 07:36:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:36:47,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:47,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:47,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:36:47,730 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:47,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash -939084666, now seen corresponding path program 1 times [2021-10-13 07:36:47,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:47,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249524517] [2021-10-13 07:36:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:47,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:47,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:47,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249524517] [2021-10-13 07:36:47,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249524517] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:47,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:47,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:36:47,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772838975] [2021-10-13 07:36:47,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:47,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:47,835 INFO L87 Difference]: Start difference. First operand 239 states and 329 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:47,946 INFO L93 Difference]: Finished difference Result 381 states and 529 transitions. [2021-10-13 07:36:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:47,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 07:36:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:47,951 INFO L225 Difference]: With dead ends: 381 [2021-10-13 07:36:47,951 INFO L226 Difference]: Without dead ends: 379 [2021-10-13 07:36:47,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-13 07:36:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 241. [2021-10-13 07:36:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.402542372881356) internal successors, (331), 240 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 331 transitions. [2021-10-13 07:36:47,979 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 331 transitions. Word has length 32 [2021-10-13 07:36:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:47,980 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 331 transitions. [2021-10-13 07:36:47,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 331 transitions. [2021-10-13 07:36:47,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:36:47,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:47,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:47,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:36:47,982 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:47,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1783201612, now seen corresponding path program 1 times [2021-10-13 07:36:47,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:47,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619524274] [2021-10-13 07:36:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:47,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:48,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:48,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619524274] [2021-10-13 07:36:48,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619524274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:48,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:48,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:36:48,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764507138] [2021-10-13 07:36:48,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:48,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:48,045 INFO L87 Difference]: Start difference. First operand 241 states and 331 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:48,174 INFO L93 Difference]: Finished difference Result 711 states and 961 transitions. [2021-10-13 07:36:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:48,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-10-13 07:36:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:48,179 INFO L225 Difference]: With dead ends: 711 [2021-10-13 07:36:48,179 INFO L226 Difference]: Without dead ends: 534 [2021-10-13 07:36:48,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-13 07:36:48,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 341. [2021-10-13 07:36:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 336 states have (on average 1.375) internal successors, (462), 340 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2021-10-13 07:36:48,233 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 33 [2021-10-13 07:36:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:48,233 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2021-10-13 07:36:48,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2021-10-13 07:36:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:36:48,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:48,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:48,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:36:48,235 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1079787492, now seen corresponding path program 1 times [2021-10-13 07:36:48,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:48,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093339649] [2021-10-13 07:36:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:48,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:48,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:48,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093339649] [2021-10-13 07:36:48,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093339649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:48,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:48,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:36:48,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317731853] [2021-10-13 07:36:48,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:36:48,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:36:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:36:48,335 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:48,511 INFO L93 Difference]: Finished difference Result 723 states and 995 transitions. [2021-10-13 07:36:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:36:48,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-10-13 07:36:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:48,517 INFO L225 Difference]: With dead ends: 723 [2021-10-13 07:36:48,517 INFO L226 Difference]: Without dead ends: 499 [2021-10-13 07:36:48,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:36:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-10-13 07:36:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 347. [2021-10-13 07:36:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.368421052631579) internal successors, (468), 346 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 468 transitions. [2021-10-13 07:36:48,584 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 468 transitions. Word has length 33 [2021-10-13 07:36:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:48,585 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 468 transitions. [2021-10-13 07:36:48,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 468 transitions. [2021-10-13 07:36:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 07:36:48,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:48,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:48,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:36:48,587 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:48,588 INFO L82 PathProgramCache]: Analyzing trace with hash 281184463, now seen corresponding path program 1 times [2021-10-13 07:36:48,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:48,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794392891] [2021-10-13 07:36:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:48,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:48,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:48,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794392891] [2021-10-13 07:36:48,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794392891] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:48,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:48,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:48,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899411249] [2021-10-13 07:36:48,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:48,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:48,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:48,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:48,627 INFO L87 Difference]: Start difference. First operand 347 states and 468 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:48,719 INFO L93 Difference]: Finished difference Result 784 states and 1044 transitions. [2021-10-13 07:36:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:48,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2021-10-13 07:36:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:48,723 INFO L225 Difference]: With dead ends: 784 [2021-10-13 07:36:48,723 INFO L226 Difference]: Without dead ends: 464 [2021-10-13 07:36:48,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-13 07:36:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 306. [2021-10-13 07:36:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 301 states have (on average 1.3488372093023255) internal successors, (406), 305 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 406 transitions. [2021-10-13 07:36:48,769 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 406 transitions. Word has length 35 [2021-10-13 07:36:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:48,770 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 406 transitions. [2021-10-13 07:36:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 406 transitions. [2021-10-13 07:36:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 07:36:48,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:48,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:48,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 07:36:48,773 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1861719145, now seen corresponding path program 1 times [2021-10-13 07:36:48,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:48,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513452810] [2021-10-13 07:36:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:48,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:48,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:48,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513452810] [2021-10-13 07:36:48,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513452810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:48,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:48,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:36:48,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360720385] [2021-10-13 07:36:48,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:36:48,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:48,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:36:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:36:48,974 INFO L87 Difference]: Start difference. First operand 306 states and 406 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:49,432 INFO L93 Difference]: Finished difference Result 1500 states and 1953 transitions. [2021-10-13 07:36:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:36:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 35 [2021-10-13 07:36:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:49,441 INFO L225 Difference]: With dead ends: 1500 [2021-10-13 07:36:49,441 INFO L226 Difference]: Without dead ends: 1252 [2021-10-13 07:36:49,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:36:49,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-13 07:36:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 369. [2021-10-13 07:36:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 364 states have (on average 1.3214285714285714) internal successors, (481), 368 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 481 transitions. [2021-10-13 07:36:49,508 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 481 transitions. Word has length 35 [2021-10-13 07:36:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:49,509 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 481 transitions. [2021-10-13 07:36:49,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 481 transitions. [2021-10-13 07:36:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:36:49,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:49,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:49,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 07:36:49,511 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:49,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:49,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1204858034, now seen corresponding path program 1 times [2021-10-13 07:36:49,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:49,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986357092] [2021-10-13 07:36:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:49,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:49,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:49,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986357092] [2021-10-13 07:36:49,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986357092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:49,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:49,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:36:49,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058347472] [2021-10-13 07:36:49,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:49,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:49,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:49,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:49,581 INFO L87 Difference]: Start difference. First operand 369 states and 481 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:49,759 INFO L93 Difference]: Finished difference Result 1049 states and 1367 transitions. [2021-10-13 07:36:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:49,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 37 [2021-10-13 07:36:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:49,765 INFO L225 Difference]: With dead ends: 1049 [2021-10-13 07:36:49,765 INFO L226 Difference]: Without dead ends: 783 [2021-10-13 07:36:49,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-10-13 07:36:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 494. [2021-10-13 07:36:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 489 states have (on average 1.2985685071574642) internal successors, (635), 493 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 635 transitions. [2021-10-13 07:36:49,840 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 635 transitions. Word has length 37 [2021-10-13 07:36:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:49,841 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 635 transitions. [2021-10-13 07:36:49,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:49,841 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 635 transitions. [2021-10-13 07:36:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 07:36:49,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:49,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:49,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 07:36:49,843 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:49,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1249636837, now seen corresponding path program 1 times [2021-10-13 07:36:49,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:49,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666749682] [2021-10-13 07:36:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:49,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:49,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:49,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666749682] [2021-10-13 07:36:49,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666749682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:49,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:36:49,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:36:49,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773052944] [2021-10-13 07:36:49,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:36:49,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:36:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:36:49,890 INFO L87 Difference]: Start difference. First operand 494 states and 635 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:50,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:50,049 INFO L93 Difference]: Finished difference Result 1168 states and 1495 transitions. [2021-10-13 07:36:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:36:50,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 07:36:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:50,054 INFO L225 Difference]: With dead ends: 1168 [2021-10-13 07:36:50,055 INFO L226 Difference]: Without dead ends: 706 [2021-10-13 07:36:50,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:36:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-13 07:36:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 458. [2021-10-13 07:36:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 453 states have (on average 1.2869757174392935) internal successors, (583), 457 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 583 transitions. [2021-10-13 07:36:50,123 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 583 transitions. Word has length 40 [2021-10-13 07:36:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:50,124 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 583 transitions. [2021-10-13 07:36:50,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 583 transitions. [2021-10-13 07:36:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:36:50,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:50,126 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:50,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 07:36:50,127 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287836, now seen corresponding path program 1 times [2021-10-13 07:36:50,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:50,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023014397] [2021-10-13 07:36:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:50,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:50,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:50,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023014397] [2021-10-13 07:36:50,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023014397] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:36:50,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533080097] [2021-10-13 07:36:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:50,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:36:50,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:36:50,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:36:50,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:36:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:50,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:36:50,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:36:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:36:50,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:36:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:36:51,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533080097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:36:51,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:36:51,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8] total 15 [2021-10-13 07:36:51,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549685882] [2021-10-13 07:36:51,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:36:51,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:36:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:36:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:36:51,270 INFO L87 Difference]: Start difference. First operand 458 states and 583 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2021-10-13 07:36:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:51,832 INFO L93 Difference]: Finished difference Result 1206 states and 1550 transitions. [2021-10-13 07:36:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 07:36:51,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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 58 [2021-10-13 07:36:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:51,839 INFO L225 Difference]: With dead ends: 1206 [2021-10-13 07:36:51,839 INFO L226 Difference]: Without dead ends: 835 [2021-10-13 07:36:51,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 336.3ms TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:36:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-10-13 07:36:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 468. [2021-10-13 07:36:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 463 states have (on average 1.2786177105831533) internal successors, (592), 467 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 592 transitions. [2021-10-13 07:36:51,966 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 592 transitions. Word has length 58 [2021-10-13 07:36:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:51,966 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 592 transitions. [2021-10-13 07:36:51,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2021-10-13 07:36:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 592 transitions. [2021-10-13 07:36:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 07:36:51,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:51,969 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:52,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 07:36:52,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 07:36:52,185 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:36:52,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:52,186 INFO L82 PathProgramCache]: Analyzing trace with hash 322903049, now seen corresponding path program 1 times [2021-10-13 07:36:52,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:52,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315741556] [2021-10-13 07:36:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:52,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:52,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:36:52,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315741556] [2021-10-13 07:36:52,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315741556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:36:52,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958674050] [2021-10-13 07:36:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:52,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:36:52,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:36:52,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:36:52,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:36:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:52,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:36:52,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:36:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:53,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:36:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:36:53,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958674050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:36:53,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [716231634] [2021-10-13 07:36:53,518 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2021-10-13 07:36:53,518 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:36:53,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:36:53,535 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:36:53,536 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:36:53,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,734 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:36:53,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:36:53,736 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:36:53,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:36:53,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-10-13 07:36:53,904 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:53,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:53,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:53,907 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:53,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:53,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:53,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:53,938 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:53,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:53,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:53,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:53,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:53,974 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,031 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,034 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,057 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,060 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:36:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:36:54,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:36:54,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:36:54,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:36:54,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:36:54,125 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,151 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,154 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,182 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,206 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,209 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,237 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,240 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,272 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,295 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,298 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:36:54,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:36:54,322 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:54,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:54,402 INFO L180 QuantifierPusher]: treesize reduction 40, result has 88.0 percent of original size [2021-10-13 07:36:54,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-10-13 07:36:54,412 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:36:54,413 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 1 variables, input treesize:4051, output treesize:293 [2021-10-13 07:36:54,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:36:54,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:36:54,637 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:36:54,640 INFO L168 Benchmark]: Toolchain (without parser) took 14015.82 ms. Allocated memory was 130.0 MB in the beginning and 226.5 MB in the end (delta: 96.5 MB). Free memory was 92.9 MB in the beginning and 141.3 MB in the end (delta: -48.4 MB). Peak memory consumption was 124.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:54,641 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 130.0 MB. Free memory was 110.0 MB in the beginning and 110.0 MB in the end (delta: 15.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:36:54,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.40 ms. Allocated memory is still 130.0 MB. Free memory was 92.7 MB in the beginning and 98.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:54,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.90 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 93.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:54,642 INFO L168 Benchmark]: Boogie Preprocessor took 92.79 ms. Allocated memory is still 130.0 MB. Free memory was 93.8 MB in the beginning and 90.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:54,642 INFO L168 Benchmark]: RCFGBuilder took 2331.26 ms. Allocated memory is still 130.0 MB. Free memory was 90.4 MB in the beginning and 92.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:54,643 INFO L168 Benchmark]: TraceAbstraction took 10816.49 ms. Allocated memory was 130.0 MB in the beginning and 226.5 MB in the end (delta: 96.5 MB). Free memory was 92.2 MB in the beginning and 141.3 MB in the end (delta: -49.1 MB). Peak memory consumption was 123.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:54,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 130.0 MB. Free memory was 110.0 MB in the beginning and 110.0 MB in the end (delta: 15.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 637.40 ms. Allocated memory is still 130.0 MB. Free memory was 92.7 MB in the beginning and 98.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 129.90 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 93.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.79 ms. Allocated memory is still 130.0 MB. Free memory was 93.8 MB in the beginning and 90.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2331.26 ms. Allocated memory is still 130.0 MB. Free memory was 90.4 MB in the beginning and 92.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10816.49 ms. Allocated memory was 130.0 MB in the beginning and 226.5 MB in the end (delta: 96.5 MB). Free memory was 92.2 MB in the beginning and 141.3 MB in the end (delta: -49.1 MB). Peak memory consumption was 123.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:36:54,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:36:57,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:36:57,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:36:57,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:36:57,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:36:57,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:36:57,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:36:57,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:36:57,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:36:57,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:36:57,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:36:57,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:36:57,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:36:57,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:36:57,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:36:57,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:36:57,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:36:57,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:36:57,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:36:57,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:36:57,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:36:57,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:36:57,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:36:57,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:36:57,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:36:57,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:36:57,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:36:57,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:36:57,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:36:57,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:36:57,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:36:57,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:36:57,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:36:57,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:36:57,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:36:57,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:36:57,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:36:57,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:36:57,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:36:57,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:36:57,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:36:57,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:36:57,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:36:57,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:36:57,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:36:57,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:36:57,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:36:57,725 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:36:57,725 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:36:57,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:36:57,726 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:36:57,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:36:57,729 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:36:57,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:36:57,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:36:57,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:36:57,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:36:57,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:36:57,731 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:36:57,731 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:36:57,732 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:36:57,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:36:57,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:36:57,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:36:57,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:36:57,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:36:57,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:36:57,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:36:57,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:36:57,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:36:57,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:36:57,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:36:57,735 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:36:57,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:36:57,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:36:57,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:36:57,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:36:57,737 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_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf [2021-10-13 07:36:58,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:36:58,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:36:58,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:36:58,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:36:58,278 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:36:58,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-13 07:36:58,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/fbd26b484/7d2fc1a872744958a2920d87b81507e3/FLAG958587a21 [2021-10-13 07:36:59,099 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:36:59,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-13 07:36:59,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/fbd26b484/7d2fc1a872744958a2920d87b81507e3/FLAG958587a21 [2021-10-13 07:36:59,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/data/fbd26b484/7d2fc1a872744958a2920d87b81507e3 [2021-10-13 07:36:59,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:36:59,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:36:59,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:59,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:36:59,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:36:59,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:36:59,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a6d382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59, skipping insertion in model container [2021-10-13 07:36:59,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:36:59,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:36:59,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:36:59,762 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_ad4274ab-c45b-41c2-a21e-051734dc0a82/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-13 07:36:59,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:59,792 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:36:59,939 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_ad4274ab-c45b-41c2-a21e-051734dc0a82/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-13 07:36:59,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:59,969 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:36:59,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59 WrapperNode [2021-10-13 07:36:59,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:59,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:36:59,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:36:59,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:36:59,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:37:00,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:37:00,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:37:00,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:37:00,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:37:00,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:37:00,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:37:00,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:37:00,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (1/1) ... [2021-10-13 07:37:00,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:37:00,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:00,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:37:00,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:37:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:37:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:37:00,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:37:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:37:01,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:37:01,632 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-13 07:37:01,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:01 BoogieIcfgContainer [2021-10-13 07:37:01,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:37:01,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:37:01,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:37:01,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:37:01,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:59" (1/3) ... [2021-10-13 07:37:01,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b46cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:01, skipping insertion in model container [2021-10-13 07:37:01,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:59" (2/3) ... [2021-10-13 07:37:01,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b46cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:01, skipping insertion in model container [2021-10-13 07:37:01,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:01" (3/3) ... [2021-10-13 07:37:01,651 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-13 07:37:01,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:37:01,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-13 07:37:01,746 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:37:01,754 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:37:01,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-13 07:37:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 271 states have (on average 1.7011070110701108) internal successors, (461), 294 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:37:01,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:01,791 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:01,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:01,799 INFO L82 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2021-10-13 07:37:01,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:01,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842373762] [2021-10-13 07:37:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:01,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:01,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:01,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:01,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:37:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:02,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:37:02,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:02,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:02,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:02,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842373762] [2021-10-13 07:37:02,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842373762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:02,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:02,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:37:02,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412429084] [2021-10-13 07:37:02,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:37:02,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:02,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:37:02,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:37:02,332 INFO L87 Difference]: Start difference. First operand has 295 states, 271 states have (on average 1.7011070110701108) internal successors, (461), 294 states have internal predecessors, (461), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:02,385 INFO L93 Difference]: Finished difference Result 574 states and 893 transitions. [2021-10-13 07:37:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:37:02,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-10-13 07:37:02,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:02,423 INFO L225 Difference]: With dead ends: 574 [2021-10-13 07:37:02,424 INFO L226 Difference]: Without dead ends: 291 [2021-10-13 07:37:02,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:37:02,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-13 07:37:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-10-13 07:37:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 268 states have (on average 1.585820895522388) internal successors, (425), 290 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 425 transitions. [2021-10-13 07:37:02,487 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 425 transitions. Word has length 33 [2021-10-13 07:37:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:02,487 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 425 transitions. [2021-10-13 07:37:02,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 425 transitions. [2021-10-13 07:37:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:37:02,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:02,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:02,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:02,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:02,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:02,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:02,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2021-10-13 07:37:02,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:02,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982230460] [2021-10-13 07:37:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:02,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:02,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:02,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:37:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:02,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:02,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:03,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:03,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:03,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982230460] [2021-10-13 07:37:03,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982230460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:03,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:03,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:37:03,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202690686] [2021-10-13 07:37:03,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:37:03,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:37:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:37:03,157 INFO L87 Difference]: Start difference. First operand 291 states and 425 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:03,264 INFO L93 Difference]: Finished difference Result 568 states and 824 transitions. [2021-10-13 07:37:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:37:03,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-10-13 07:37:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:03,272 INFO L225 Difference]: With dead ends: 568 [2021-10-13 07:37:03,273 INFO L226 Difference]: Without dead ends: 291 [2021-10-13 07:37:03,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:37:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-13 07:37:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-10-13 07:37:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 268 states have (on average 1.541044776119403) internal successors, (413), 290 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 413 transitions. [2021-10-13 07:37:03,310 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 413 transitions. Word has length 33 [2021-10-13 07:37:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:03,313 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 413 transitions. [2021-10-13 07:37:03,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 413 transitions. [2021-10-13 07:37:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:37:03,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:03,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:03,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:03,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:03,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:03,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:03,526 INFO L82 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2021-10-13 07:37:03,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:03,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34419244] [2021-10-13 07:37:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:03,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:03,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:03,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:03,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:37:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:03,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:03,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:03,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:03,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:03,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34419244] [2021-10-13 07:37:03,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34419244] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:03,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:03,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:03,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933420973] [2021-10-13 07:37:03,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:03,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:03,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:03,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:03,943 INFO L87 Difference]: Start difference. First operand 291 states and 413 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:04,012 INFO L93 Difference]: Finished difference Result 645 states and 924 transitions. [2021-10-13 07:37:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-10-13 07:37:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:04,016 INFO L225 Difference]: With dead ends: 645 [2021-10-13 07:37:04,016 INFO L226 Difference]: Without dead ends: 371 [2021-10-13 07:37:04,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-13 07:37:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 267. [2021-10-13 07:37:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 248 states have (on average 1.5201612903225807) internal successors, (377), 266 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 377 transitions. [2021-10-13 07:37:04,056 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 377 transitions. Word has length 44 [2021-10-13 07:37:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:04,057 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 377 transitions. [2021-10-13 07:37:04,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 377 transitions. [2021-10-13 07:37:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 07:37:04,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:04,059 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:04,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:04,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:04,260 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:04,260 INFO L82 PathProgramCache]: Analyzing trace with hash -777659854, now seen corresponding path program 1 times [2021-10-13 07:37:04,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:04,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49166118] [2021-10-13 07:37:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:04,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:04,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:04,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:04,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:37:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:04,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:37:04,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:04,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:05,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:05,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49166118] [2021-10-13 07:37:05,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49166118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:05,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:05,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:37:05,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728860360] [2021-10-13 07:37:05,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:37:05,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:37:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:37:05,109 INFO L87 Difference]: Start difference. First operand 267 states and 377 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:05,652 INFO L93 Difference]: Finished difference Result 1062 states and 1521 transitions. [2021-10-13 07:37:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:37:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 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 53 [2021-10-13 07:37:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:05,660 INFO L225 Difference]: With dead ends: 1062 [2021-10-13 07:37:05,660 INFO L226 Difference]: Without dead ends: 812 [2021-10-13 07:37:05,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:37:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-13 07:37:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 324. [2021-10-13 07:37:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 305 states have (on average 1.5049180327868852) internal successors, (459), 323 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 459 transitions. [2021-10-13 07:37:05,689 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 459 transitions. Word has length 53 [2021-10-13 07:37:05,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:05,690 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 459 transitions. [2021-10-13 07:37:05,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:05,691 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 459 transitions. [2021-10-13 07:37:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 07:37:05,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:05,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:05,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:05,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:05,908 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash -2135089546, now seen corresponding path program 1 times [2021-10-13 07:37:05,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:05,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019145480] [2021-10-13 07:37:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:05,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:05,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:05,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:05,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:37:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:06,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:37:06,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:06,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:06,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:06,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019145480] [2021-10-13 07:37:06,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019145480] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:06,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:06,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:37:06,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966506836] [2021-10-13 07:37:06,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:37:06,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:37:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:37:06,644 INFO L87 Difference]: Start difference. First operand 324 states and 459 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:07,096 INFO L93 Difference]: Finished difference Result 1062 states and 1519 transitions. [2021-10-13 07:37:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:37:07,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 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 54 [2021-10-13 07:37:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:07,104 INFO L225 Difference]: With dead ends: 1062 [2021-10-13 07:37:07,104 INFO L226 Difference]: Without dead ends: 812 [2021-10-13 07:37:07,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:37:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-13 07:37:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 324. [2021-10-13 07:37:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 305 states have (on average 1.501639344262295) internal successors, (458), 323 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 458 transitions. [2021-10-13 07:37:07,134 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 458 transitions. Word has length 54 [2021-10-13 07:37:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:07,135 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 458 transitions. [2021-10-13 07:37:07,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 458 transitions. [2021-10-13 07:37:07,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 07:37:07,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:07,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:07,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:07,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:07,351 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:07,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash 412338309, now seen corresponding path program 1 times [2021-10-13 07:37:07,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:07,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334055236] [2021-10-13 07:37:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:07,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:07,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:07,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:07,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:37:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:07,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:37:07,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:07,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:08,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:08,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334055236] [2021-10-13 07:37:08,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334055236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:08,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:08,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:08,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176966441] [2021-10-13 07:37:08,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:08,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:08,036 INFO L87 Difference]: Start difference. First operand 324 states and 458 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:08,088 INFO L93 Difference]: Finished difference Result 830 states and 1183 transitions. [2021-10-13 07:37:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:08,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 55 [2021-10-13 07:37:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:08,095 INFO L225 Difference]: With dead ends: 830 [2021-10-13 07:37:08,096 INFO L226 Difference]: Without dead ends: 580 [2021-10-13 07:37:08,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-13 07:37:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 386. [2021-10-13 07:37:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 367 states have (on average 1.4877384196185286) internal successors, (546), 385 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 546 transitions. [2021-10-13 07:37:08,135 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 546 transitions. Word has length 55 [2021-10-13 07:37:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:08,136 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 546 transitions. [2021-10-13 07:37:08,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 546 transitions. [2021-10-13 07:37:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 07:37:08,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:08,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:08,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 07:37:08,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:08,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:08,357 INFO L82 PathProgramCache]: Analyzing trace with hash 392369909, now seen corresponding path program 1 times [2021-10-13 07:37:08,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:08,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438933551] [2021-10-13 07:37:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:08,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:08,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:08,360 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:08,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:37:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:08,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:37:08,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:08,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:08,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:08,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438933551] [2021-10-13 07:37:08,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438933551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:08,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:08,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:08,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832964174] [2021-10-13 07:37:08,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:08,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:08,986 INFO L87 Difference]: Start difference. First operand 386 states and 546 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:09,062 INFO L93 Difference]: Finished difference Result 920 states and 1308 transitions. [2021-10-13 07:37:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 [2021-10-13 07:37:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:09,068 INFO L225 Difference]: With dead ends: 920 [2021-10-13 07:37:09,068 INFO L226 Difference]: Without dead ends: 637 [2021-10-13 07:37:09,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-10-13 07:37:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 419. [2021-10-13 07:37:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 400 states have (on average 1.47) internal successors, (588), 418 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2021-10-13 07:37:09,109 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 56 [2021-10-13 07:37:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:09,109 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2021-10-13 07:37:09,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2021-10-13 07:37:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 07:37:09,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:09,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:09,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 07:37:09,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:09,326 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:09,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1072428279, now seen corresponding path program 1 times [2021-10-13 07:37:09,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:09,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271606541] [2021-10-13 07:37:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:09,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:09,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:09,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:09,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:37:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:09,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:37:09,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:09,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:09,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:09,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271606541] [2021-10-13 07:37:09,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271606541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:09,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:09,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:37:09,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390491142] [2021-10-13 07:37:09,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:37:09,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:37:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:37:09,937 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:09,997 INFO L93 Difference]: Finished difference Result 725 states and 1028 transitions. [2021-10-13 07:37:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:37:09,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 [2021-10-13 07:37:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:10,001 INFO L225 Difference]: With dead ends: 725 [2021-10-13 07:37:10,001 INFO L226 Difference]: Without dead ends: 390 [2021-10-13 07:37:10,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:37:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-13 07:37:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-10-13 07:37:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 371 states have (on average 1.4851752021563343) internal successors, (551), 389 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 551 transitions. [2021-10-13 07:37:10,030 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 551 transitions. Word has length 56 [2021-10-13 07:37:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:10,031 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 551 transitions. [2021-10-13 07:37:10,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 551 transitions. [2021-10-13 07:37:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 07:37:10,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:10,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:10,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:10,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:10,246 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:10,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:10,246 INFO L82 PathProgramCache]: Analyzing trace with hash 315847341, now seen corresponding path program 1 times [2021-10-13 07:37:10,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:10,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635257571] [2021-10-13 07:37:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:10,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:10,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:10,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:10,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:37:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:10,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:10,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:10,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:10,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:10,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635257571] [2021-10-13 07:37:10,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635257571] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:10,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:10,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:10,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958672102] [2021-10-13 07:37:10,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:10,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:10,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:10,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:10,946 INFO L87 Difference]: Start difference. First operand 390 states and 551 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:10,997 INFO L93 Difference]: Finished difference Result 827 states and 1180 transitions. [2021-10-13 07:37:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:10,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 [2021-10-13 07:37:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:11,002 INFO L225 Difference]: With dead ends: 827 [2021-10-13 07:37:11,002 INFO L226 Difference]: Without dead ends: 540 [2021-10-13 07:37:11,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-10-13 07:37:11,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 385. [2021-10-13 07:37:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 367 states have (on average 1.4795640326975477) internal successors, (543), 384 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 543 transitions. [2021-10-13 07:37:11,044 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 543 transitions. Word has length 56 [2021-10-13 07:37:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:11,044 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 543 transitions. [2021-10-13 07:37:11,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 543 transitions. [2021-10-13 07:37:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 07:37:11,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:11,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:11,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:11,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:11,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:11,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2107582331, now seen corresponding path program 1 times [2021-10-13 07:37:11,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:11,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830332776] [2021-10-13 07:37:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:11,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:11,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:11,263 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:11,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:37:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:11,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:11,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:11,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:11,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:11,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830332776] [2021-10-13 07:37:11,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830332776] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:11,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:11,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:11,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658473580] [2021-10-13 07:37:11,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:11,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:11,980 INFO L87 Difference]: Start difference. First operand 385 states and 543 transitions. Second operand has 3 states, 3 states have (on average 20.0) 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) [2021-10-13 07:37:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:12,062 INFO L93 Difference]: Finished difference Result 809 states and 1160 transitions. [2021-10-13 07:37:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) 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 [2021-10-13 07:37:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:12,066 INFO L225 Difference]: With dead ends: 809 [2021-10-13 07:37:12,066 INFO L226 Difference]: Without dead ends: 527 [2021-10-13 07:37:12,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-10-13 07:37:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 365. [2021-10-13 07:37:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 351 states have (on average 1.4558404558404558) internal successors, (511), 364 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 511 transitions. [2021-10-13 07:37:12,102 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 511 transitions. Word has length 60 [2021-10-13 07:37:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:12,103 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 511 transitions. [2021-10-13 07:37:12,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) 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) [2021-10-13 07:37:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 511 transitions. [2021-10-13 07:37:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 07:37:12,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:12,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:12,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:12,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:12,325 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:12,326 INFO L82 PathProgramCache]: Analyzing trace with hash -22697507, now seen corresponding path program 1 times [2021-10-13 07:37:12,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:12,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242117479] [2021-10-13 07:37:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:12,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:12,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:12,328 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:37:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:12,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:12,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:12,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:13,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:13,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242117479] [2021-10-13 07:37:13,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242117479] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:13,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:13,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:13,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857861488] [2021-10-13 07:37:13,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:13,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:13,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:13,110 INFO L87 Difference]: Start difference. First operand 365 states and 511 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-10-13 07:37:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:13,196 INFO L93 Difference]: Finished difference Result 748 states and 1058 transitions. [2021-10-13 07:37:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:13,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 [2021-10-13 07:37:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:13,200 INFO L225 Difference]: With dead ends: 748 [2021-10-13 07:37:13,201 INFO L226 Difference]: Without dead ends: 486 [2021-10-13 07:37:13,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-13 07:37:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 353. [2021-10-13 07:37:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 341 states have (on average 1.4457478005865103) internal successors, (493), 352 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 493 transitions. [2021-10-13 07:37:13,238 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 493 transitions. Word has length 64 [2021-10-13 07:37:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:13,239 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 493 transitions. [2021-10-13 07:37:13,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-10-13 07:37:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 493 transitions. [2021-10-13 07:37:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 07:37:13,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:13,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:13,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:13,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:13,461 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:13,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:13,462 INFO L82 PathProgramCache]: Analyzing trace with hash -417972715, now seen corresponding path program 1 times [2021-10-13 07:37:13,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:13,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906130230] [2021-10-13 07:37:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:13,462 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:13,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:13,463 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:13,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:37:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:13,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:13,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:14,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:14,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:14,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906130230] [2021-10-13 07:37:14,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906130230] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:14,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:14,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:37:14,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610600440] [2021-10-13 07:37:14,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:37:14,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:37:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:37:14,394 INFO L87 Difference]: Start difference. First operand 353 states and 493 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2021-10-13 07:37:14,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:14,623 INFO L93 Difference]: Finished difference Result 1315 states and 1850 transitions. [2021-10-13 07:37:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:14,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 [2021-10-13 07:37:14,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:14,632 INFO L225 Difference]: With dead ends: 1315 [2021-10-13 07:37:14,632 INFO L226 Difference]: Without dead ends: 1065 [2021-10-13 07:37:14,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:37:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-10-13 07:37:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 370. [2021-10-13 07:37:14,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 358 states have (on average 1.4273743016759777) internal successors, (511), 369 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 511 transitions. [2021-10-13 07:37:14,691 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 511 transitions. Word has length 65 [2021-10-13 07:37:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:14,691 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 511 transitions. [2021-10-13 07:37:14,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2021-10-13 07:37:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 511 transitions. [2021-10-13 07:37:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 07:37:14,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:14,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:14,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:14,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:14,909 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:14,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1586633556, now seen corresponding path program 1 times [2021-10-13 07:37:14,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:14,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440392258] [2021-10-13 07:37:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:14,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:14,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:14,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:14,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:37:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:15,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:15,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:15,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:15,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:15,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440392258] [2021-10-13 07:37:15,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440392258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:15,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:15,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:15,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581755096] [2021-10-13 07:37:15,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:15,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:15,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:15,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:15,695 INFO L87 Difference]: Start difference. First operand 370 states and 511 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:15,780 INFO L93 Difference]: Finished difference Result 772 states and 1088 transitions. [2021-10-13 07:37:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:15,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 07:37:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:15,784 INFO L225 Difference]: With dead ends: 772 [2021-10-13 07:37:15,785 INFO L226 Difference]: Without dead ends: 522 [2021-10-13 07:37:15,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-10-13 07:37:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 350. [2021-10-13 07:37:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 342 states have (on average 1.4005847953216375) internal successors, (479), 349 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 479 transitions. [2021-10-13 07:37:15,821 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 479 transitions. Word has length 67 [2021-10-13 07:37:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:15,822 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 479 transitions. [2021-10-13 07:37:15,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 479 transitions. [2021-10-13 07:37:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 07:37:15,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:15,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:15,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:16,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:16,045 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:16,046 INFO L82 PathProgramCache]: Analyzing trace with hash 132586540, now seen corresponding path program 1 times [2021-10-13 07:37:16,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:16,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706984154] [2021-10-13 07:37:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:16,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:16,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:16,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:37:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:16,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:16,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:16,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:16,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:16,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706984154] [2021-10-13 07:37:16,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706984154] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:16,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:16,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:16,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080515821] [2021-10-13 07:37:16,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:16,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:16,915 INFO L87 Difference]: Start difference. First operand 350 states and 479 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:17,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:17,001 INFO L93 Difference]: Finished difference Result 729 states and 1012 transitions. [2021-10-13 07:37:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:17,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-10-13 07:37:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:17,005 INFO L225 Difference]: With dead ends: 729 [2021-10-13 07:37:17,006 INFO L226 Difference]: Without dead ends: 499 [2021-10-13 07:37:17,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-10-13 07:37:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 338. [2021-10-13 07:37:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 332 states have (on average 1.3885542168674698) internal successors, (461), 337 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 461 transitions. [2021-10-13 07:37:17,041 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 461 transitions. Word has length 71 [2021-10-13 07:37:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:17,042 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 461 transitions. [2021-10-13 07:37:17,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 461 transitions. [2021-10-13 07:37:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 07:37:17,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:17,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:17,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:17,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:17,257 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:17,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:17,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1972545423, now seen corresponding path program 1 times [2021-10-13 07:37:17,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:17,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248044245] [2021-10-13 07:37:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:17,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:17,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:17,259 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:17,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:37:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:17,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:37:17,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:18,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:18,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:18,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248044245] [2021-10-13 07:37:18,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248044245] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:18,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:18,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-13 07:37:18,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100961465] [2021-10-13 07:37:18,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:37:18,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:37:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:37:18,260 INFO L87 Difference]: Start difference. First operand 338 states and 461 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:18,617 INFO L93 Difference]: Finished difference Result 1405 states and 1936 transitions. [2021-10-13 07:37:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:37:18,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 74 [2021-10-13 07:37:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:18,625 INFO L225 Difference]: With dead ends: 1405 [2021-10-13 07:37:18,626 INFO L226 Difference]: Without dead ends: 1187 [2021-10-13 07:37:18,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:37:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-10-13 07:37:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 366. [2021-10-13 07:37:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 360 states have (on average 1.3694444444444445) internal successors, (493), 365 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 493 transitions. [2021-10-13 07:37:18,674 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 493 transitions. Word has length 74 [2021-10-13 07:37:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:18,674 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 493 transitions. [2021-10-13 07:37:18,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 493 transitions. [2021-10-13 07:37:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 07:37:18,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:18,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:18,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:18,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:18,890 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:18,890 INFO L82 PathProgramCache]: Analyzing trace with hash -303657044, now seen corresponding path program 1 times [2021-10-13 07:37:18,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:18,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450988544] [2021-10-13 07:37:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:18,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:18,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:18,893 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:18,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:37:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:19,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:19,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:19,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:20,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:20,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450988544] [2021-10-13 07:37:20,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450988544] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:20,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:20,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:37:20,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529772136] [2021-10-13 07:37:20,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:37:20,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:37:20,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:37:20,009 INFO L87 Difference]: Start difference. First operand 366 states and 493 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:20,305 INFO L93 Difference]: Finished difference Result 1066 states and 1463 transitions. [2021-10-13 07:37:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:20,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 74 [2021-10-13 07:37:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:20,312 INFO L225 Difference]: With dead ends: 1066 [2021-10-13 07:37:20,313 INFO L226 Difference]: Without dead ends: 827 [2021-10-13 07:37:20,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:37:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-10-13 07:37:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 374. [2021-10-13 07:37:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 368 states have (on average 1.361413043478261) internal successors, (501), 373 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 501 transitions. [2021-10-13 07:37:20,358 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 501 transitions. Word has length 74 [2021-10-13 07:37:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:20,359 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 501 transitions. [2021-10-13 07:37:20,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 501 transitions. [2021-10-13 07:37:20,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 07:37:20,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:20,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:20,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:20,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:20,576 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:20,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1045793593, now seen corresponding path program 1 times [2021-10-13 07:37:20,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:20,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167208990] [2021-10-13 07:37:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:20,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:20,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:20,578 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:20,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:37:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:21,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:37:21,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:21,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:21,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:21,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167208990] [2021-10-13 07:37:21,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167208990] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:21,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:21,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-13 07:37:21,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341515281] [2021-10-13 07:37:21,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:37:21,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:21,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:37:21,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:37:21,731 INFO L87 Difference]: Start difference. First operand 374 states and 501 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:22,103 INFO L93 Difference]: Finished difference Result 1290 states and 1764 transitions. [2021-10-13 07:37:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:37:22,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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 75 [2021-10-13 07:37:22,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:22,119 INFO L225 Difference]: With dead ends: 1290 [2021-10-13 07:37:22,120 INFO L226 Difference]: Without dead ends: 1051 [2021-10-13 07:37:22,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:37:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-10-13 07:37:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 399. [2021-10-13 07:37:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 393 states have (on average 1.3435114503816794) internal successors, (528), 398 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 528 transitions. [2021-10-13 07:37:22,181 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 528 transitions. Word has length 75 [2021-10-13 07:37:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:22,181 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 528 transitions. [2021-10-13 07:37:22,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 528 transitions. [2021-10-13 07:37:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 07:37:22,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:22,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:22,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:22,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:22,399 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash -533178723, now seen corresponding path program 1 times [2021-10-13 07:37:22,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:22,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370288310] [2021-10-13 07:37:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:22,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:22,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:22,401 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:22,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:37:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:23,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:23,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:23,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:23,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:23,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370288310] [2021-10-13 07:37:23,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370288310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:23,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:23,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:37:23,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661867742] [2021-10-13 07:37:23,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:37:23,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:37:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:37:23,483 INFO L87 Difference]: Start difference. First operand 399 states and 528 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:23,671 INFO L93 Difference]: Finished difference Result 1069 states and 1425 transitions. [2021-10-13 07:37:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:37:23,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2021-10-13 07:37:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:23,677 INFO L225 Difference]: With dead ends: 1069 [2021-10-13 07:37:23,678 INFO L226 Difference]: Without dead ends: 816 [2021-10-13 07:37:23,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:37:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-10-13 07:37:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 621. [2021-10-13 07:37:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 615 states have (on average 1.313821138211382) internal successors, (808), 620 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 808 transitions. [2021-10-13 07:37:23,754 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 808 transitions. Word has length 75 [2021-10-13 07:37:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:23,754 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 808 transitions. [2021-10-13 07:37:23,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 808 transitions. [2021-10-13 07:37:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 07:37:23,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:23,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:23,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:23,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:23,977 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:23,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:23,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1664992290, now seen corresponding path program 1 times [2021-10-13 07:37:23,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:23,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547784015] [2021-10-13 07:37:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:23,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:23,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:23,981 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:24,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:37:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:24,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:37:24,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:24,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:25,164 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:25,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547784015] [2021-10-13 07:37:25,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547784015] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:25,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:25,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:37:25,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938064035] [2021-10-13 07:37:25,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:37:25,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:25,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:37:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:37:25,167 INFO L87 Difference]: Start difference. First operand 621 states and 808 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:25,655 INFO L93 Difference]: Finished difference Result 1488 states and 1942 transitions. [2021-10-13 07:37:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:37:25,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 77 [2021-10-13 07:37:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:25,662 INFO L225 Difference]: With dead ends: 1488 [2021-10-13 07:37:25,663 INFO L226 Difference]: Without dead ends: 924 [2021-10-13 07:37:25,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:37:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-13 07:37:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 544. [2021-10-13 07:37:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 538 states have (on average 1.3178438661710037) internal successors, (709), 543 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 709 transitions. [2021-10-13 07:37:25,743 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 709 transitions. Word has length 77 [2021-10-13 07:37:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:25,744 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 709 transitions. [2021-10-13 07:37:25,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 709 transitions. [2021-10-13 07:37:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 07:37:25,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:25,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:25,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:25,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:25,962 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash 529404806, now seen corresponding path program 1 times [2021-10-13 07:37:25,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:25,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959286908] [2021-10-13 07:37:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:25,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:25,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:25,965 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:26,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:37:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:26,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:37:26,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:26,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:27,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:27,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959286908] [2021-10-13 07:37:27,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959286908] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:27,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:27,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-13 07:37:27,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501369689] [2021-10-13 07:37:27,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:37:27,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:37:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:37:27,320 INFO L87 Difference]: Start difference. First operand 544 states and 709 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:27,699 INFO L93 Difference]: Finished difference Result 1668 states and 2266 transitions. [2021-10-13 07:37:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:27,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 77 [2021-10-13 07:37:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:27,709 INFO L225 Difference]: With dead ends: 1668 [2021-10-13 07:37:27,710 INFO L226 Difference]: Without dead ends: 1262 [2021-10-13 07:37:27,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:37:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-10-13 07:37:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 517. [2021-10-13 07:37:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 511 states have (on average 1.3170254403131116) internal successors, (673), 516 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 673 transitions. [2021-10-13 07:37:27,802 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 673 transitions. Word has length 77 [2021-10-13 07:37:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:27,803 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 673 transitions. [2021-10-13 07:37:27,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 673 transitions. [2021-10-13 07:37:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 07:37:27,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:27,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:27,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:28,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:28,019 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:28,020 INFO L82 PathProgramCache]: Analyzing trace with hash 542872594, now seen corresponding path program 1 times [2021-10-13 07:37:28,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:28,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032843156] [2021-10-13 07:37:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:28,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:28,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:28,022 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:28,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:37:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:28,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:28,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:29,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:29,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:29,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032843156] [2021-10-13 07:37:29,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032843156] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:29,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:29,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:37:29,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062517208] [2021-10-13 07:37:29,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:37:29,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:37:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:37:29,199 INFO L87 Difference]: Start difference. First operand 517 states and 673 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:29,378 INFO L93 Difference]: Finished difference Result 1431 states and 1900 transitions. [2021-10-13 07:37:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:37:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2021-10-13 07:37:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:29,387 INFO L225 Difference]: With dead ends: 1431 [2021-10-13 07:37:29,387 INFO L226 Difference]: Without dead ends: 1052 [2021-10-13 07:37:29,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:37:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-10-13 07:37:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 715. [2021-10-13 07:37:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 709 states have (on average 1.2976022566995769) internal successors, (920), 714 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 920 transitions. [2021-10-13 07:37:29,486 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 920 transitions. Word has length 77 [2021-10-13 07:37:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:29,486 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 920 transitions. [2021-10-13 07:37:29,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 920 transitions. [2021-10-13 07:37:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 07:37:29,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:29,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:29,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:29,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:29,697 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:29,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash -284584036, now seen corresponding path program 1 times [2021-10-13 07:37:29,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:29,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896944427] [2021-10-13 07:37:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:29,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:29,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:29,699 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:29,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:37:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:30,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:30,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:30,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:30,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:30,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896944427] [2021-10-13 07:37:30,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896944427] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:30,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:30,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:37:30,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369247414] [2021-10-13 07:37:30,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:37:30,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:37:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:37:30,902 INFO L87 Difference]: Start difference. First operand 715 states and 920 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:31,216 INFO L93 Difference]: Finished difference Result 1976 states and 2619 transitions. [2021-10-13 07:37:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:31,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2021-10-13 07:37:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:31,227 INFO L225 Difference]: With dead ends: 1976 [2021-10-13 07:37:31,228 INFO L226 Difference]: Without dead ends: 1452 [2021-10-13 07:37:31,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:37:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-10-13 07:37:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 739. [2021-10-13 07:37:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 733 states have (on average 1.2919508867667122) internal successors, (947), 738 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 947 transitions. [2021-10-13 07:37:31,344 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 947 transitions. Word has length 78 [2021-10-13 07:37:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:31,344 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 947 transitions. [2021-10-13 07:37:31,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 947 transitions. [2021-10-13 07:37:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 07:37:31,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:31,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:31,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:31,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:31,562 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1325659995, now seen corresponding path program 1 times [2021-10-13 07:37:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:31,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210154585] [2021-10-13 07:37:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:31,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:31,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:31,564 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:31,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:37:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:32,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:32,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:32,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:32,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:32,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210154585] [2021-10-13 07:37:32,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210154585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:32,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:32,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:37:32,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019344728] [2021-10-13 07:37:33,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:37:33,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:37:33,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:37:33,003 INFO L87 Difference]: Start difference. First operand 739 states and 947 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:33,270 INFO L93 Difference]: Finished difference Result 1904 states and 2531 transitions. [2021-10-13 07:37:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 79 [2021-10-13 07:37:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:33,277 INFO L225 Difference]: With dead ends: 1904 [2021-10-13 07:37:33,278 INFO L226 Difference]: Without dead ends: 1380 [2021-10-13 07:37:33,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:37:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2021-10-13 07:37:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 749. [2021-10-13 07:37:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 743 states have (on average 1.288021534320323) internal successors, (957), 748 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 957 transitions. [2021-10-13 07:37:33,385 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 957 transitions. Word has length 79 [2021-10-13 07:37:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:33,385 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 957 transitions. [2021-10-13 07:37:33,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 957 transitions. [2021-10-13 07:37:33,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 07:37:33,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:33,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:33,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:33,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:33,601 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1593609901, now seen corresponding path program 1 times [2021-10-13 07:37:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:33,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077134428] [2021-10-13 07:37:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:33,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:33,603 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:33,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:37:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:34,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:37:34,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:34,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:34,915 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:34,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077134428] [2021-10-13 07:37:34,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077134428] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:34,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:34,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:37:34,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240909687] [2021-10-13 07:37:34,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:37:34,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:37:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:37:34,917 INFO L87 Difference]: Start difference. First operand 749 states and 957 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:35,306 INFO L93 Difference]: Finished difference Result 1798 states and 2329 transitions. [2021-10-13 07:37:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:37:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 80 [2021-10-13 07:37:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:35,319 INFO L225 Difference]: With dead ends: 1798 [2021-10-13 07:37:35,319 INFO L226 Difference]: Without dead ends: 1128 [2021-10-13 07:37:35,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:37:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-10-13 07:37:35,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 693. [2021-10-13 07:37:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 687 states have (on average 1.282387190684134) internal successors, (881), 692 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 881 transitions. [2021-10-13 07:37:35,406 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 881 transitions. Word has length 80 [2021-10-13 07:37:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:35,406 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 881 transitions. [2021-10-13 07:37:35,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 881 transitions. [2021-10-13 07:37:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-13 07:37:35,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:35,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:35,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:35,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:35,613 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:35,613 INFO L82 PathProgramCache]: Analyzing trace with hash -385203667, now seen corresponding path program 1 times [2021-10-13 07:37:35,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:35,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115502355] [2021-10-13 07:37:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:35,614 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:35,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:35,615 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:35,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 07:37:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:36,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:36,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:37,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:37,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115502355] [2021-10-13 07:37:37,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115502355] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:37,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:37,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:37:37,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199681850] [2021-10-13 07:37:37,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:37:37,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:37:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:37:37,004 INFO L87 Difference]: Start difference. First operand 693 states and 881 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:37,283 INFO L93 Difference]: Finished difference Result 2108 states and 2811 transitions. [2021-10-13 07:37:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 83 [2021-10-13 07:37:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:37,290 INFO L225 Difference]: With dead ends: 2108 [2021-10-13 07:37:37,290 INFO L226 Difference]: Without dead ends: 1584 [2021-10-13 07:37:37,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:37:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-10-13 07:37:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 687. [2021-10-13 07:37:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 681 states have (on average 1.2848751835535976) internal successors, (875), 686 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 875 transitions. [2021-10-13 07:37:37,414 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 875 transitions. Word has length 83 [2021-10-13 07:37:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:37,415 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 875 transitions. [2021-10-13 07:37:37,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 875 transitions. [2021-10-13 07:37:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-13 07:37:37,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:37,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:37,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:37,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:37,633 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1261369472, now seen corresponding path program 1 times [2021-10-13 07:37:37,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:37,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677471962] [2021-10-13 07:37:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:37,634 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:37,635 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:37,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:37:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:38,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:37:38,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:38,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:38,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:38,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677471962] [2021-10-13 07:37:38,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677471962] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:38,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:38,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:38,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045463853] [2021-10-13 07:37:38,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:38,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:38,929 INFO L87 Difference]: Start difference. First operand 687 states and 875 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:39,088 INFO L93 Difference]: Finished difference Result 1337 states and 1754 transitions. [2021-10-13 07:37:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:39,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-10-13 07:37:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:39,093 INFO L225 Difference]: With dead ends: 1337 [2021-10-13 07:37:39,093 INFO L226 Difference]: Without dead ends: 813 [2021-10-13 07:37:39,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-10-13 07:37:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 683. [2021-10-13 07:37:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 678 states have (on average 1.28023598820059) internal successors, (868), 682 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 868 transitions. [2021-10-13 07:37:39,212 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 868 transitions. Word has length 83 [2021-10-13 07:37:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:39,213 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 868 transitions. [2021-10-13 07:37:39,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 868 transitions. [2021-10-13 07:37:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-13 07:37:39,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:39,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:39,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:39,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:39,429 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:39,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:39,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1708909977, now seen corresponding path program 1 times [2021-10-13 07:37:39,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:39,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499714347] [2021-10-13 07:37:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:39,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:39,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:39,431 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:39,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 07:37:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:40,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:40,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:40,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:40,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:40,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499714347] [2021-10-13 07:37:40,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499714347] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:40,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:40,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:37:40,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708133139] [2021-10-13 07:37:40,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:37:40,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:37:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:37:40,832 INFO L87 Difference]: Start difference. First operand 683 states and 868 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:41,129 INFO L93 Difference]: Finished difference Result 1226 states and 1597 transitions. [2021-10-13 07:37:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:37:41,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 87 [2021-10-13 07:37:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:41,137 INFO L225 Difference]: With dead ends: 1226 [2021-10-13 07:37:41,138 INFO L226 Difference]: Without dead ends: 1224 [2021-10-13 07:37:41,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:37:41,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-10-13 07:37:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 685. [2021-10-13 07:37:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 680 states have (on average 1.2794117647058822) internal successors, (870), 684 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 870 transitions. [2021-10-13 07:37:41,259 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 870 transitions. Word has length 87 [2021-10-13 07:37:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:41,260 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 870 transitions. [2021-10-13 07:37:41,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 870 transitions. [2021-10-13 07:37:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-13 07:37:41,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:41,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:41,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:41,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:41,479 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash -596332183, now seen corresponding path program 1 times [2021-10-13 07:37:41,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:41,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808064362] [2021-10-13 07:37:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:41,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:41,481 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:41,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 07:37:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:42,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:37:42,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:42,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:43,217 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:43,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808064362] [2021-10-13 07:37:43,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808064362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:43,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:43,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:37:43,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162966836] [2021-10-13 07:37:43,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:37:43,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:37:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:37:43,219 INFO L87 Difference]: Start difference. First operand 685 states and 870 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:43,519 INFO L93 Difference]: Finished difference Result 1596 states and 2129 transitions. [2021-10-13 07:37:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 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 88 [2021-10-13 07:37:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:43,527 INFO L225 Difference]: With dead ends: 1596 [2021-10-13 07:37:43,527 INFO L226 Difference]: Without dead ends: 1074 [2021-10-13 07:37:43,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:37:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-10-13 07:37:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 691. [2021-10-13 07:37:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 686 states have (on average 1.2769679300291545) internal successors, (876), 690 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 876 transitions. [2021-10-13 07:37:43,634 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 876 transitions. Word has length 88 [2021-10-13 07:37:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:43,635 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 876 transitions. [2021-10-13 07:37:43,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:43,635 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 876 transitions. [2021-10-13 07:37:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-13 07:37:43,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:43,638 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:43,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:43,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:43,853 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash -672316026, now seen corresponding path program 1 times [2021-10-13 07:37:43,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:43,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748304902] [2021-10-13 07:37:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:43,855 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:43,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:43,856 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:43,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 07:37:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:45,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:37:45,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:45,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:46,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:46,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748304902] [2021-10-13 07:37:46,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748304902] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:46,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1400180332] [2021-10-13 07:37:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:46,306 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:37:46,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:37:46,307 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:37:46,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-10-13 07:37:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:47,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:37:47,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:48,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:48,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1400180332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:48,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487423374] [2021-10-13 07:37:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:48,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:37:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:48,869 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:37:48,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 07:37:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:50,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:37:50,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:50,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:51,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487423374] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:51,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:37:51,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-13 07:37:51,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42836220] [2021-10-13 07:37:51,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 07:37:51,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:51,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 07:37:51,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:37:51,307 INFO L87 Difference]: Start difference. First operand 691 states and 876 transitions. Second operand has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 17 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:53,542 INFO L93 Difference]: Finished difference Result 2551 states and 3324 transitions. [2021-10-13 07:37:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 07:37:53,543 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 17 states have internal predecessors, (233), 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 138 [2021-10-13 07:37:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:53,553 INFO L225 Difference]: With dead ends: 2551 [2021-10-13 07:37:53,553 INFO L226 Difference]: Without dead ends: 2029 [2021-10-13 07:37:53,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 800 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1043.9ms TimeCoverageRelationStatistics Valid=709, Invalid=2831, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 07:37:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-10-13 07:37:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1015. [2021-10-13 07:37:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1010 states have (on average 1.2792079207920792) internal successors, (1292), 1014 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1292 transitions. [2021-10-13 07:37:53,752 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1292 transitions. Word has length 138 [2021-10-13 07:37:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:53,753 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 1292 transitions. [2021-10-13 07:37:53,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 17 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1292 transitions. [2021-10-13 07:37:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-13 07:37:53,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:53,757 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:53,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:54,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-13 07:37:54,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-10-13 07:37:54,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:37:54,375 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:37:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:54,376 INFO L82 PathProgramCache]: Analyzing trace with hash 103025318, now seen corresponding path program 1 times [2021-10-13 07:37:54,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:54,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612684092] [2021-10-13 07:37:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:54,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:54,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:54,378 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:54,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 07:37:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:55,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:37:55,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:56,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:57,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:57,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612684092] [2021-10-13 07:37:57,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612684092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:57,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [752228091] [2021-10-13 07:37:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:57,129 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:37:57,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:37:57,130 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:37:57,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-10-13 07:37:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:59,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:37:59,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:59,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:00,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [752228091] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:00,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740135825] [2021-10-13 07:38:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:00,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:00,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:00,221 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:00,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 07:38:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:02,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:38:02,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:02,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:03,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740135825] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:03,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:38:03,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-13 07:38:03,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613881848] [2021-10-13 07:38:03,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 07:38:03,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 07:38:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:38:03,156 INFO L87 Difference]: Start difference. First operand 1015 states and 1292 transitions. Second operand has 18 states, 18 states have (on average 13.444444444444445) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:05,948 INFO L93 Difference]: Finished difference Result 3889 states and 5085 transitions. [2021-10-13 07:38:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 07:38:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.444444444444445) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-10-13 07:38:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:05,960 INFO L225 Difference]: With dead ends: 3889 [2021-10-13 07:38:05,960 INFO L226 Difference]: Without dead ends: 3112 [2021-10-13 07:38:05,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 806 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1070.5ms TimeCoverageRelationStatistics Valid=757, Invalid=3275, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 07:38:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2021-10-13 07:38:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 1538. [2021-10-13 07:38:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1533 states have (on average 1.2850619699934769) internal successors, (1970), 1537 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1970 transitions. [2021-10-13 07:38:06,309 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1970 transitions. Word has length 139 [2021-10-13 07:38:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:06,310 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 1970 transitions. [2021-10-13 07:38:06,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.444444444444445) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1970 transitions. [2021-10-13 07:38:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-10-13 07:38:06,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:06,315 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:06,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:06,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-10-13 07:38:06,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:06,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:06,941 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:38:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1245800031, now seen corresponding path program 1 times [2021-10-13 07:38:06,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:06,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271173004] [2021-10-13 07:38:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:06,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:06,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:06,944 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:06,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 07:38:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:08,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:38:08,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:09,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:09,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:09,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271173004] [2021-10-13 07:38:09,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271173004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:09,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096587555] [2021-10-13 07:38:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:09,780 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:09,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:38:09,781 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:38:09,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-10-13 07:38:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:11,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:38:11,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:12,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:12,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1096587555] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:12,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989906810] [2021-10-13 07:38:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:12,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:12,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:12,851 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:12,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 07:38:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:14,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:38:14,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:15,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:15,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989906810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:15,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:38:15,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-10-13 07:38:15,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37243245] [2021-10-13 07:38:15,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:38:15,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:15,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:38:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:38:15,597 INFO L87 Difference]: Start difference. First operand 1538 states and 1970 transitions. Second operand has 12 states, 12 states have (on average 21.25) internal successors, (255), 11 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:16,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:16,886 INFO L93 Difference]: Finished difference Result 5779 states and 7658 transitions. [2021-10-13 07:38:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:38:16,901 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.25) internal successors, (255), 11 states have internal predecessors, (255), 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 140 [2021-10-13 07:38:16,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:16,917 INFO L225 Difference]: With dead ends: 5779 [2021-10-13 07:38:16,917 INFO L226 Difference]: Without dead ends: 4573 [2021-10-13 07:38:16,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 818 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2021-10-13 07:38:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2021-10-13 07:38:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 1831. [2021-10-13 07:38:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1826 states have (on average 1.2995618838992333) internal successors, (2373), 1830 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2373 transitions. [2021-10-13 07:38:17,211 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2373 transitions. Word has length 140 [2021-10-13 07:38:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:17,211 INFO L470 AbstractCegarLoop]: Abstraction has 1831 states and 2373 transitions. [2021-10-13 07:38:17,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.25) internal successors, (255), 11 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2373 transitions. [2021-10-13 07:38:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 07:38:17,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:17,216 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:17,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:17,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:17,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:17,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:17,825 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:38:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:17,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1332154129, now seen corresponding path program 1 times [2021-10-13 07:38:17,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:17,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127631593] [2021-10-13 07:38:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:17,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:17,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:17,826 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:17,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 07:38:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:19,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:38:19,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:20,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:20,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:20,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127631593] [2021-10-13 07:38:20,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127631593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:20,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2075731823] [2021-10-13 07:38:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:20,532 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:20,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:38:20,533 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:38:20,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-10-13 07:38:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:22,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:38:22,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 07:38:23,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 07:38:23,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2075731823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:23,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:38:23,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 16 [2021-10-13 07:38:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89217221] [2021-10-13 07:38:23,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:38:23,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:38:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:38:23,363 INFO L87 Difference]: Start difference. First operand 1831 states and 2373 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:24,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:24,656 INFO L93 Difference]: Finished difference Result 9002 states and 12023 transitions. [2021-10-13 07:38:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:38:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 141 [2021-10-13 07:38:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:24,666 INFO L225 Difference]: With dead ends: 9002 [2021-10-13 07:38:24,666 INFO L226 Difference]: Without dead ends: 7503 [2021-10-13 07:38:24,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:38:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7503 states. [2021-10-13 07:38:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7503 to 2250. [2021-10-13 07:38:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2245 states have (on average 1.2739420935412027) internal successors, (2860), 2249 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2860 transitions. [2021-10-13 07:38:25,057 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2860 transitions. Word has length 141 [2021-10-13 07:38:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:25,058 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2860 transitions. [2021-10-13 07:38:25,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2860 transitions. [2021-10-13 07:38:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 07:38:25,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:25,063 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:25,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:25,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:25,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:25,471 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:38:25,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:25,471 INFO L82 PathProgramCache]: Analyzing trace with hash -190848533, now seen corresponding path program 1 times [2021-10-13 07:38:25,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:25,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768645036] [2021-10-13 07:38:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:25,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:25,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:25,473 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:25,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 07:38:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:27,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:38:27,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:38:27,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:38:28,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:28,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768645036] [2021-10-13 07:38:28,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768645036] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:28,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:28,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:38:28,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875290758] [2021-10-13 07:38:28,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:38:28,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:38:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:38:28,237 INFO L87 Difference]: Start difference. First operand 2250 states and 2860 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:29,150 INFO L93 Difference]: Finished difference Result 6428 states and 8346 transitions. [2021-10-13 07:38:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:38:29,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 141 [2021-10-13 07:38:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:29,160 INFO L225 Difference]: With dead ends: 6428 [2021-10-13 07:38:29,160 INFO L226 Difference]: Without dead ends: 4490 [2021-10-13 07:38:29,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:38:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2021-10-13 07:38:29,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 2250. [2021-10-13 07:38:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2245 states have (on average 1.2730512249443207) internal successors, (2858), 2249 states have internal predecessors, (2858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2858 transitions. [2021-10-13 07:38:29,720 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2858 transitions. Word has length 141 [2021-10-13 07:38:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:29,721 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2858 transitions. [2021-10-13 07:38:29,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2858 transitions. [2021-10-13 07:38:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-13 07:38:29,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:29,727 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:29,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-13 07:38:29,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:29,941 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-13 07:38:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:29,941 INFO L82 PathProgramCache]: Analyzing trace with hash 689093620, now seen corresponding path program 1 times [2021-10-13 07:38:29,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:29,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739926890] [2021-10-13 07:38:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:29,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:29,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:29,943 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:29,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 07:38:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:38:32,351 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:38:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:38:33,338 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:38:33,338 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:38:33,339 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:38:33,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:33,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:33,576 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:38:33,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:38:33 BoogieIcfgContainer [2021-10-13 07:38:33,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:38:33,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:38:33,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:38:33,928 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:38:33,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:01" (3/4) ... [2021-10-13 07:38:33,932 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:38:34,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:38:34,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:38:34,276 INFO L168 Benchmark]: Toolchain (without parser) took 94887.55 ms. Allocated memory was 62.9 MB in the beginning and 612.4 MB in the end (delta: 549.5 MB). Free memory was 42.7 MB in the beginning and 424.0 MB in the end (delta: -381.3 MB). Peak memory consumption was 169.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:34,277 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 62.9 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:38:34,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.34 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 42.4 MB in the beginning and 64.0 MB in the end (delta: -21.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:34,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.95 ms. Allocated memory is still 86.0 MB. Free memory was 64.0 MB in the beginning and 59.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:34,279 INFO L168 Benchmark]: Boogie Preprocessor took 76.45 ms. Allocated memory is still 86.0 MB. Free memory was 59.2 MB in the beginning and 55.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:34,279 INFO L168 Benchmark]: RCFGBuilder took 1462.17 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 41.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:34,280 INFO L168 Benchmark]: TraceAbstraction took 92285.15 ms. Allocated memory was 86.0 MB in the beginning and 612.4 MB in the end (delta: 526.4 MB). Free memory was 40.5 MB in the beginning and 469.2 MB in the end (delta: -428.7 MB). Peak memory consumption was 352.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:34,284 INFO L168 Benchmark]: Witness Printer took 347.05 ms. Allocated memory is still 612.4 MB. Free memory was 469.2 MB in the beginning and 424.0 MB in the end (delta: 45.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:34,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 62.9 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 580.34 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 42.4 MB in the beginning and 64.0 MB in the end (delta: -21.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 126.95 ms. Allocated memory is still 86.0 MB. Free memory was 64.0 MB in the beginning and 59.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.45 ms. Allocated memory is still 86.0 MB. Free memory was 59.2 MB in the beginning and 55.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1462.17 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 41.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92285.15 ms. Allocated memory was 86.0 MB in the beginning and 612.4 MB in the end (delta: 526.4 MB). Free memory was 40.5 MB in the beginning and 469.2 MB in the end (delta: -428.7 MB). Peak memory consumption was 352.2 MB. Max. memory is 16.1 GB. * Witness Printer took 347.05 ms. Allocated memory is still 612.4 MB. Free memory was 469.2 MB in the beginning and 424.0 MB in the end (delta: 45.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 611]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] msg_t nomsg = (msg_t )-1; [L25] port_t cs1 ; [L26] int8_t cs1_old ; [L27] int8_t cs1_new ; [L28] port_t cs2 ; [L29] int8_t cs2_old ; [L30] int8_t cs2_new ; [L31] port_t s1s2 ; [L32] int8_t s1s2_old ; [L33] int8_t s1s2_new ; [L34] port_t s1s1 ; [L35] int8_t s1s1_old ; [L36] int8_t s1s1_new ; [L37] port_t s2s1 ; [L38] int8_t s2s1_old ; [L39] int8_t s2s1_new ; [L40] port_t s2s2 ; [L41] int8_t s2s2_old ; [L42] int8_t s2s2_new ; [L43] port_t s1p ; [L44] int8_t s1p_old ; [L45] int8_t s1p_new ; [L46] port_t s2p ; [L47] int8_t s2p_old ; [L48] int8_t s2p_new ; [L51] _Bool side1Failed ; [L52] _Bool side2Failed ; [L53] msg_t side1_written ; [L54] msg_t side2_written ; [L60] static _Bool side1Failed_History_0 ; [L61] static _Bool side1Failed_History_1 ; [L62] static _Bool side1Failed_History_2 ; [L63] static _Bool side2Failed_History_0 ; [L64] static _Bool side2Failed_History_1 ; [L65] static _Bool side2Failed_History_2 ; [L66] static int8_t active_side_History_0 ; [L67] static int8_t active_side_History_1 ; [L68] static int8_t active_side_History_2 ; [L69] static msg_t manual_selection_History_0 ; [L70] static msg_t manual_selection_History_1 ; [L71] static msg_t manual_selection_History_2 ; VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=0, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L534] int c1 ; [L535] int i2 ; [L538] c1 = 0 [L539] side1Failed = __VERIFIER_nondet_bool() [L540] side2Failed = __VERIFIER_nondet_bool() [L541] side1_written = __VERIFIER_nondet_char() [L542] side2_written = __VERIFIER_nondet_char() [L543] side1Failed_History_0 = __VERIFIER_nondet_bool() [L544] side1Failed_History_1 = __VERIFIER_nondet_bool() [L545] side1Failed_History_2 = __VERIFIER_nondet_bool() [L546] side2Failed_History_0 = __VERIFIER_nondet_bool() [L547] side2Failed_History_1 = __VERIFIER_nondet_bool() [L548] side2Failed_History_2 = __VERIFIER_nondet_bool() [L549] active_side_History_0 = __VERIFIER_nondet_char() [L550] active_side_History_1 = __VERIFIER_nondet_char() [L551] active_side_History_2 = __VERIFIER_nondet_char() [L552] manual_selection_History_0 = __VERIFIER_nondet_char() [L553] manual_selection_History_1 = __VERIFIER_nondet_char() [L554] manual_selection_History_2 = __VERIFIER_nondet_char() [L197] COND FALSE !((int )side1Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L200] COND FALSE !((int )side2Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L203] COND FALSE !((int )active_side_History_0 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L206] COND FALSE !((int )manual_selection_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L209] COND FALSE !((int )side1Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L212] COND FALSE !((int )side2Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L215] COND FALSE !((int )active_side_History_1 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L218] COND FALSE !((int )manual_selection_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L221] COND FALSE !((int )side1Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L224] COND FALSE !((int )side2Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L227] COND FALSE !((int )active_side_History_2 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L230] COND FALSE !((int )manual_selection_History_2 != 0) [L233] return (1); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L555] i2 = init() [L58] COND FALSE !(!cond) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L557] cs1_old = nomsg [L558] cs1_new = nomsg [L559] cs2_old = nomsg [L560] cs2_new = nomsg [L561] s1s2_old = nomsg [L562] s1s2_new = nomsg [L563] s1s1_old = nomsg [L564] s1s1_new = nomsg [L565] s2s1_old = nomsg [L566] s2s1_new = nomsg [L567] s2s2_old = nomsg [L568] s2s2_new = nomsg [L569] s1p_old = nomsg [L570] s1p_new = nomsg [L571] s2p_old = nomsg [L572] s2p_new = nomsg [L573] i2 = 0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L574] COND TRUE i2 < 10 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND TRUE \read(side1Failed) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] EXPR nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] s1s1_new = nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new [L279] EXPR nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L279] s1s2_new = nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new [L280] EXPR nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L280] s1p_new = nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new [L281] side1_written = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L347] COND TRUE (int )side1 == (int )side2 [L348] next_state = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) [L407] active_side = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L580] cs1_old = cs1_new [L581] cs1_new = nomsg [L582] cs2_old = cs2_new [L583] cs2_new = nomsg [L584] s1s2_old = s1s2_new [L585] s1s2_new = nomsg [L586] s1s1_old = s1s1_new [L587] s1s1_new = nomsg [L588] s2s1_old = s2s1_new [L589] s2s1_new = nomsg [L590] s2s2_old = s2s2_new [L591] s2s2_new = nomsg [L592] s1p_old = s1p_new [L593] s1p_new = nomsg [L594] s2p_old = s2p_new [L595] s2p_new = nomsg [L415] int tmp ; [L416] msg_t tmp___0 ; [L417] _Bool tmp___1 ; [L418] _Bool tmp___2 ; [L419] _Bool tmp___3 ; [L420] _Bool tmp___4 ; [L421] int8_t tmp___5 ; [L422] _Bool tmp___6 ; [L423] _Bool tmp___7 ; [L424] _Bool tmp___8 ; [L425] int8_t tmp___9 ; [L426] _Bool tmp___10 ; [L427] _Bool tmp___11 ; [L428] _Bool tmp___12 ; [L429] msg_t tmp___13 ; [L430] _Bool tmp___14 ; [L431] _Bool tmp___15 ; [L432] _Bool tmp___16 ; [L433] _Bool tmp___17 ; [L434] int8_t tmp___18 ; [L435] int8_t tmp___19 ; [L436] int8_t tmp___20 ; VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L439] COND FALSE !(! side1Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L442] COND TRUE ! side2Failed [L443] tmp = 1 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L448] tmp___0 = read_manual_selection_history((unsigned char)1) [L449] COND TRUE ! tmp___0 [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L450] tmp___1 = read_side1_failed_history((unsigned char)1) [L451] COND TRUE ! tmp___1 [L88] COND TRUE (int )index == 0 [L89] return (side1Failed_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L452] tmp___2 = read_side1_failed_history((unsigned char)0) [L453] COND FALSE !(! tmp___2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L478] tmp___7 = read_side1_failed_history((unsigned char)1) [L479] COND FALSE !(\read(tmp___7)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L494] tmp___11 = read_side1_failed_history((unsigned char)1) [L495] COND TRUE ! tmp___11 [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L496] tmp___12 = read_side2_failed_history((unsigned char)1) [L497] COND FALSE !(\read(tmp___12)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L148] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L151] COND FALSE !((int )index == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L154] COND TRUE (int )index == 2 [L155] return (active_side_History_2); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L510] tmp___20 = read_active_side_history((unsigned char)2) [L511] COND FALSE !((int )tmp___20 > -2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L529] return (1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L596] c1 = check() [L609] COND FALSE !(! arg) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L598] i2 ++ VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L574] COND TRUE i2 < 10 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=64, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=64, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND FALSE !(\read(side1Failed)) [L284] side1 = s1s1_old [L285] s1s1_old = nomsg [L286] side2 = s2s1_old [L287] s2s1_old = nomsg [L288] manual_selection = cs1_old [L289] cs1_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L290] COND FALSE !((int )side1 == (int )side2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L293] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L294] COND TRUE (int )side2 != (int )nomsg [L295] next_state = (int8_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L314] EXPR next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L314] s1s1_new = next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L315] EXPR next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L315] s1s2_new = next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L316] EXPR next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L316] s1p_new = next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L317] side1_written = next_state VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND TRUE \read(side2Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L335] EXPR nomsg != nomsg && s2s1_new == nomsg ? nomsg : s2s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L335] s2s1_new = nomsg != nomsg && s2s1_new == nomsg ? nomsg : s2s1_new [L336] EXPR nomsg != nomsg && s2s2_new == nomsg ? nomsg : s2s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L336] s2s2_new = nomsg != nomsg && s2s2_new == nomsg ? nomsg : s2s2_new [L337] EXPR nomsg != nomsg && s2p_new == nomsg ? nomsg : s2p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L337] s2p_new = nomsg != nomsg && s2p_new == nomsg ? nomsg : s2p_new [L338] side2_written = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) [L407] active_side = (int8_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L580] cs1_old = cs1_new [L581] cs1_new = nomsg [L582] cs2_old = cs2_new [L583] cs2_new = nomsg [L584] s1s2_old = s1s2_new [L585] s1s2_new = nomsg [L586] s1s1_old = s1s1_new [L587] s1s1_new = nomsg [L588] s2s1_old = s2s1_new [L589] s2s1_new = nomsg [L590] s2s2_old = s2s2_new [L591] s2s2_new = nomsg [L592] s1p_old = s1p_new [L593] s1p_new = nomsg [L594] s2p_old = s2p_new [L595] s2p_new = nomsg [L415] int tmp ; [L416] msg_t tmp___0 ; [L417] _Bool tmp___1 ; [L418] _Bool tmp___2 ; [L419] _Bool tmp___3 ; [L420] _Bool tmp___4 ; [L421] int8_t tmp___5 ; [L422] _Bool tmp___6 ; [L423] _Bool tmp___7 ; [L424] _Bool tmp___8 ; [L425] int8_t tmp___9 ; [L426] _Bool tmp___10 ; [L427] _Bool tmp___11 ; [L428] _Bool tmp___12 ; [L429] msg_t tmp___13 ; [L430] _Bool tmp___14 ; [L431] _Bool tmp___15 ; [L432] _Bool tmp___16 ; [L433] _Bool tmp___17 ; [L434] int8_t tmp___18 ; [L435] int8_t tmp___19 ; [L436] int8_t tmp___20 ; VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L439] COND TRUE ! side1Failed [L440] tmp = 1 VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L448] tmp___0 = read_manual_selection_history((unsigned char)1) [L449] COND FALSE !(! tmp___0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L478] tmp___7 = read_side1_failed_history((unsigned char)1) [L479] COND TRUE \read(tmp___7) [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L480] tmp___8 = read_side2_failed_history((unsigned char)1) [L481] COND TRUE ! tmp___8 [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L482] tmp___5 = read_active_side_history((unsigned char)0) [L483] COND TRUE ! ((int )tmp___5 == 2) [L484] return (0); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L596] c1 = check() [L609] COND TRUE ! arg VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L611] reach_error() VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 295 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 91828.3ms, OverallIterations: 34, TraceHistogramMax: 2, EmptinessCheckTime: 97.2ms, AutomataDifference: 15270.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14141 SDtfs, 33954 SDslu, 41201 SDs, 0 SdLazy, 5806 SolverSat, 464 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4538.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7246 GetRequests, 6866 SyntacticMatches, 34 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3757.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2250occurred in iteration=32, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3546.0ms AutomataMinimizationTime, 33 MinimizatonAttempts, 23104 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1317.2ms SsaConstructionTime, 6494.7ms SatisfiabilityAnalysisTime, 23136.2ms InterpolantComputationTime, 3690 NumberOfCodeBlocks, 3690 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 7016 ConstructedInterpolants, 0 QuantifiedInterpolants, 24041 SizeOfPredicates, 120 NumberOfNonLiveVariables, 11655 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 80 InterpolantComputations, 60 PerfectInterpolantSequences, 608/834 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:38:34,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4274ab-c45b-41c2-a21e-051734dc0a82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...