./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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 e45e933f699aab7bcc9592c7af081e2fbc1238f5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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 e45e933f699aab7bcc9592c7af081e2fbc1238f5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:03:35,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:03:35,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:03:35,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:03:35,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:03:35,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:03:35,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:03:35,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:03:35,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:03:35,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:03:35,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:03:35,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:03:35,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:03:35,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:03:35,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:03:35,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:03:35,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:03:35,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:03:35,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:03:35,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:03:35,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:03:35,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:03:35,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:03:35,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:03:35,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:03:35,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:03:35,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:03:35,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:03:35,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:03:35,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:03:35,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:03:35,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:03:35,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:03:35,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:03:35,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:03:35,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:03:35,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:03:35,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:03:35,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:03:35,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:03:35,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:03:35,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:03:35,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:03:35,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:03:35,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:03:35,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:03:35,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:03:35,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:03:35,180 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:03:35,180 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:03:35,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:03:35,187 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:03:35,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:03:35,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:03:35,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:03:35,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:03:35,189 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:03:35,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:03:35,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:03:35,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:03:35,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:03:35,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:03:35,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:03:35,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:03:35,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:03:35,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:03:35,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:03:35,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:03:35,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:03:35,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:03:35,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:03:35,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:03:35,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:03:35,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:03:35,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:03:35,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:03:35,196 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:03:35,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:03:35,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:03:35,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:03:35,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:03:35,197 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45e933f699aab7bcc9592c7af081e2fbc1238f5 [2021-10-13 08:03:35,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:03:35,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:03:35,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:03:35,510 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:03:35,511 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:03:35,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-13 08:03:35,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/680093ec7/a440e1f4e69541ffaf23e49341a5f31a/FLAG01a9c8092 [2021-10-13 08:03:36,034 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:03:36,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-13 08:03:36,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/680093ec7/a440e1f4e69541ffaf23e49341a5f31a/FLAG01a9c8092 [2021-10-13 08:03:36,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/680093ec7/a440e1f4e69541ffaf23e49341a5f31a [2021-10-13 08:03:36,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:03:36,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:03:36,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:03:36,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:03:36,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:03:36,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f669016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36, skipping insertion in model container [2021-10-13 08:03:36,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:03:36,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:03:36,639 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-13 08:03:36,644 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-13 08:03:36,648 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-13 08:03:36,650 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-13 08:03:36,653 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-13 08:03:36,654 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-13 08:03:36,658 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-13 08:03:36,672 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-13 08:03:36,678 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-13 08:03:36,680 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-13 08:03:36,685 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-13 08:03:36,687 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-13 08:03:36,695 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-13 08:03:36,697 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-13 08:03:36,699 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-13 08:03:36,701 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-13 08:03:36,703 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-13 08:03:36,705 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-13 08:03:36,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:03:36,726 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:03:36,742 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-13 08:03:36,743 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-13 08:03:36,745 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-13 08:03:36,746 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-13 08:03:36,748 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-13 08:03:36,749 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-13 08:03:36,751 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-13 08:03:36,754 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-13 08:03:36,757 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-13 08:03:36,758 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-13 08:03:36,760 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-13 08:03:36,762 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-13 08:03:36,768 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-13 08:03:36,779 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-13 08:03:36,781 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-13 08:03:36,782 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-13 08:03:36,785 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-13 08:03:36,786 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-13 08:03:36,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:03:36,817 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:03:36,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36 WrapperNode [2021-10-13 08:03:36,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:03:36,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:03:36,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:03:36,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:03:36,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:03:36,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:03:36,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:03:36,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:03:36,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:03:36,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:03:36,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:03:36,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:03:36,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (1/1) ... [2021-10-13 08:03:36,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:03:36,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:03:36,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:03:36,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:03:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:03:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:03:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:03:37,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:03:37,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:03:37,460 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 08:03:37,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:03:37 BoogieIcfgContainer [2021-10-13 08:03:37,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:03:37,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:03:37,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:03:37,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:03:37,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:03:36" (1/3) ... [2021-10-13 08:03:37,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6476b718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:03:37, skipping insertion in model container [2021-10-13 08:03:37,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:36" (2/3) ... [2021-10-13 08:03:37,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6476b718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:03:37, skipping insertion in model container [2021-10-13 08:03:37,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:03:37" (3/3) ... [2021-10-13 08:03:37,471 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2021-10-13 08:03:37,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:03:37,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-13 08:03:37,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:03:37,526 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 08:03:37,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-13 08:03:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 79 states have internal predecessors, (117), 0 states have call successors, (0), 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 08:03:37,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 08:03:37,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:37,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:37,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:37,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1091334804, now seen corresponding path program 1 times [2021-10-13 08:03:37,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:37,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401156919] [2021-10-13 08:03:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:37,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:37,864 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 08:03:37,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:37,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401156919] [2021-10-13 08:03:37,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401156919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:37,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:37,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:03:37,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812398069] [2021-10-13 08:03:37,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:03:37,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:03:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:03:37,905 INFO L87 Difference]: Start difference. First operand has 80 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 79 states have internal predecessors, (117), 0 states have call successors, (0), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 08:03:37,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:37,962 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2021-10-13 08:03:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:03:37,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-13 08:03:37,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:37,977 INFO L225 Difference]: With dead ends: 84 [2021-10-13 08:03:37,978 INFO L226 Difference]: Without dead ends: 75 [2021-10-13 08:03:37,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:03:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-13 08:03:38,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-13 08:03:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 74 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 08:03:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-10-13 08:03:38,032 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 14 [2021-10-13 08:03:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:38,033 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-10-13 08:03:38,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 08:03:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-10-13 08:03:38,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:03:38,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:38,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:38,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:03:38,037 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash 528363536, now seen corresponding path program 1 times [2021-10-13 08:03:38,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:38,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949691527] [2021-10-13 08:03:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:38,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:38,196 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 08:03:38,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:38,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949691527] [2021-10-13 08:03:38,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949691527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:38,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:38,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 08:03:38,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860408995] [2021-10-13 08:03:38,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:03:38,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:03:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:03:38,200 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 08:03:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:38,280 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2021-10-13 08:03:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:03:38,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-10-13 08:03:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:38,282 INFO L225 Difference]: With dead ends: 75 [2021-10-13 08:03:38,282 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 08:03:38,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:03:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 08:03:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-13 08:03:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 72 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 08:03:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-10-13 08:03:38,292 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 15 [2021-10-13 08:03:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-10-13 08:03:38,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 08:03:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-10-13 08:03:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 08:03:38,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:38,294 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 08:03:38,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:03:38,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:38,296 INFO L82 PathProgramCache]: Analyzing trace with hash 951344371, now seen corresponding path program 1 times [2021-10-13 08:03:38,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:38,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138213290] [2021-10-13 08:03:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:38,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:38,360 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 08:03:38,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:38,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138213290] [2021-10-13 08:03:38,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138213290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:38,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:38,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:03:38,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704760477] [2021-10-13 08:03:38,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:03:38,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:03:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:03:38,363 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 08:03:38,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:38,480 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-10-13 08:03:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:03:38,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 08:03:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:38,483 INFO L225 Difference]: With dead ends: 96 [2021-10-13 08:03:38,483 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 08:03:38,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:03:38,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 08:03:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2021-10-13 08:03:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 70 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 08:03:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-10-13 08:03:38,496 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 17 [2021-10-13 08:03:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:38,496 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-10-13 08:03:38,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 08:03:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-10-13 08:03:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:03:38,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:38,498 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:38,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:03:38,498 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:38,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:38,499 INFO L82 PathProgramCache]: Analyzing trace with hash -573091462, now seen corresponding path program 1 times [2021-10-13 08:03:38,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:38,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572167605] [2021-10-13 08:03:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:38,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:38,575 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 08:03:38,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:38,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572167605] [2021-10-13 08:03:38,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572167605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:38,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:38,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:03:38,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090465749] [2021-10-13 08:03:38,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:03:38,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:03:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:03:38,580 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 08:03:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:38,668 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-10-13 08:03:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:03:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-13 08:03:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:38,678 INFO L225 Difference]: With dead ends: 71 [2021-10-13 08:03:38,678 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 08:03:38,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:03:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 08:03:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-13 08:03:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.309090909090909) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 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 08:03:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-10-13 08:03:38,698 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 18 [2021-10-13 08:03:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:38,699 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-10-13 08:03:38,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 08:03:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-10-13 08:03:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 08:03:38,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:38,701 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 08:03:38,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 08:03:38,702 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash -468627622, now seen corresponding path program 1 times [2021-10-13 08:03:38,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:38,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544343623] [2021-10-13 08:03:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:38,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:38,807 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 08:03:38,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:38,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544343623] [2021-10-13 08:03:38,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544343623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:38,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:38,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:03:38,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449848442] [2021-10-13 08:03:38,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:03:38,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:03:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:03:38,810 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 08:03:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:38,965 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-10-13 08:03:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:03:38,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 08:03:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:38,973 INFO L225 Difference]: With dead ends: 136 [2021-10-13 08:03:38,973 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 08:03:38,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:03:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 08:03:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-10-13 08:03:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 71 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 08:03:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-10-13 08:03:38,998 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 21 [2021-10-13 08:03:38,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:38,998 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-10-13 08:03:38,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 08:03:38,998 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-10-13 08:03:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 08:03:38,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:38,999 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 08:03:38,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 08:03:39,000 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:39,000 INFO L82 PathProgramCache]: Analyzing trace with hash -464459857, now seen corresponding path program 1 times [2021-10-13 08:03:39,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:39,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792266759] [2021-10-13 08:03:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:39,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:39,105 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 08:03:39,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:39,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792266759] [2021-10-13 08:03:39,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792266759] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:39,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:39,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:03:39,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805524498] [2021-10-13 08:03:39,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:03:39,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:39,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:03:39,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:03:39,109 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 08:03:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:39,225 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-10-13 08:03:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:03:39,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 08:03:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:39,226 INFO L225 Difference]: With dead ends: 103 [2021-10-13 08:03:39,227 INFO L226 Difference]: Without dead ends: 101 [2021-10-13 08:03:39,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:03:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-13 08:03:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2021-10-13 08:03:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 73 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 08:03:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-10-13 08:03:39,234 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 21 [2021-10-13 08:03:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:39,235 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-10-13 08:03:39,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 08:03:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-10-13 08:03:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:03:39,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:39,236 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 08:03:39,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 08:03:39,237 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1642550139, now seen corresponding path program 1 times [2021-10-13 08:03:39,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:39,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878257396] [2021-10-13 08:03:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:39,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:39,294 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 08:03:39,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:39,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878257396] [2021-10-13 08:03:39,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878257396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:39,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:39,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:03:39,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618305702] [2021-10-13 08:03:39,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:03:39,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:03:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:03:39,302 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 08:03:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:39,419 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-10-13 08:03:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:03:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 08:03:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:39,421 INFO L225 Difference]: With dead ends: 116 [2021-10-13 08:03:39,421 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 08:03:39,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:03:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 08:03:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 72. [2021-10-13 08:03:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.305084745762712) internal successors, (77), 71 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 08:03:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-10-13 08:03:39,434 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 22 [2021-10-13 08:03:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:39,434 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-10-13 08:03:39,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 08:03:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-10-13 08:03:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:03:39,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:39,435 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 08:03:39,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 08:03:39,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1513349547, now seen corresponding path program 1 times [2021-10-13 08:03:39,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:39,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668148084] [2021-10-13 08:03:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:39,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:39,520 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 08:03:39,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:39,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668148084] [2021-10-13 08:03:39,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668148084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:39,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:39,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:03:39,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226349954] [2021-10-13 08:03:39,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:03:39,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:03:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:03:39,523 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 08:03:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:39,629 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2021-10-13 08:03:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:03:39,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 08:03:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:39,634 INFO L225 Difference]: With dead ends: 72 [2021-10-13 08:03:39,634 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 08:03:39,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:03:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 08:03:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 08:03:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.293103448275862) internal successors, (75), 69 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 08:03:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2021-10-13 08:03:39,640 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 22 [2021-10-13 08:03:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:39,641 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2021-10-13 08:03:39,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 08:03:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2021-10-13 08:03:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:03:39,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:39,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:39,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 08:03:39,642 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:39,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1665131132, now seen corresponding path program 1 times [2021-10-13 08:03:39,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:39,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222795618] [2021-10-13 08:03:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:39,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:39,685 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 08:03:39,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:39,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222795618] [2021-10-13 08:03:39,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222795618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:39,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:39,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:03:39,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771123674] [2021-10-13 08:03:39,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:03:39,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:03:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:03:39,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:03:39,690 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:39,734 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-10-13 08:03:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:03:39,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 08:03:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:39,735 INFO L225 Difference]: With dead ends: 110 [2021-10-13 08:03:39,736 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 08:03:39,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:03:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 08:03:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 08:03:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 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 08:03:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-10-13 08:03:39,741 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 24 [2021-10-13 08:03:39,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:39,741 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-10-13 08:03:39,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-10-13 08:03:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:03:39,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:39,743 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:39,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 08:03:39,743 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:39,744 INFO L82 PathProgramCache]: Analyzing trace with hash -649021887, now seen corresponding path program 1 times [2021-10-13 08:03:39,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:03:39,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115735981] [2021-10-13 08:03:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:39,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:03:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:03:39,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:03:39,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115735981] [2021-10-13 08:03:39,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115735981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:03:39,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947437722] [2021-10-13 08:03:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:39,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:03:39,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:03:39,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:03:39,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:03:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:39,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:03:39,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:03:40,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:03:40,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947437722] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:40,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [751394512] [2021-10-13 08:03:40,219 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-10-13 08:03:40,219 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:03:40,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:03:40,231 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:03:40,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:03:40,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:40,294 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:03:40,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:40,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:03:40,299 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:03:40,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:40,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:03:40,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-13 08:03:40,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:03:40,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:03:40,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:03:40,394 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 08:03:40,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 08:03:40,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:40,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:03:40,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:40,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:03:40,405 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:03:40,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:03:40,423 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:40,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:40,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-13 08:03:40,429 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:03:40,429 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:146, output treesize:130 [2021-10-13 08:03:40,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:40,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 08:03:40,657 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_9| 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 08:03:40,659 INFO L168 Benchmark]: Toolchain (without parser) took 4258.01 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 50.0 MB in the beginning and 72.3 MB in the end (delta: -22.3 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:40,660 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:03:40,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.07 ms. Allocated memory is still 92.3 MB. Free memory was 70.7 MB in the beginning and 58.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:40,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 56.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:40,661 INFO L168 Benchmark]: Boogie Preprocessor took 44.57 ms. Allocated memory is still 92.3 MB. Free memory was 56.0 MB in the beginning and 54.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:40,661 INFO L168 Benchmark]: RCFGBuilder took 553.91 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 37.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:40,662 INFO L168 Benchmark]: TraceAbstraction took 3193.42 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 36.9 MB in the beginning and 72.3 MB in the end (delta: -35.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:03:40,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.07 ms. Allocated memory is still 92.3 MB. Free memory was 70.7 MB in the beginning and 58.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 56.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.57 ms. Allocated memory is still 92.3 MB. Free memory was 56.0 MB in the beginning and 54.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 553.91 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 37.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3193.42 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 36.9 MB in the beginning and 72.3 MB in the end (delta: -35.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_9| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_9|: 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 08:03:40,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:03:43,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:03:43,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:03:43,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:03:43,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:03:43,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:03:43,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:03:43,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:03:43,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:03:43,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:03:43,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:03:43,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:03:43,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:03:43,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:03:43,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:03:43,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:03:43,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:03:43,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:03:43,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:03:43,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:03:43,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:03:43,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:03:43,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:03:43,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:03:43,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:03:43,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:03:43,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:03:43,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:03:43,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:03:43,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:03:43,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:03:43,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:03:43,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:03:43,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:03:43,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:03:43,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:03:43,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:03:43,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:03:43,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:03:43,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:03:43,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:03:43,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:03:43,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:03:43,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:03:43,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:03:43,218 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:03:43,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:03:43,219 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:03:43,219 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:03:43,219 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:03:43,219 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:03:43,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:03:43,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:03:43,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:03:43,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:03:43,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:03:43,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:03:43,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:03:43,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:03:43,221 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:03:43,222 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:03:43,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:03:43,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:03:43,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:03:43,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:03:43,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:03:43,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:03:43,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:03:43,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:03:43,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:03:43,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:03:43,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:03:43,224 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:03:43,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:03:43,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:03:43,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:03:43,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:03:43,225 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45e933f699aab7bcc9592c7af081e2fbc1238f5 [2021-10-13 08:03:43,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:03:43,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:03:43,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:03:43,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:03:43,643 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:03:43,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-13 08:03:43,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/10583cba3/23e3122e77fe47fab2d56874b97c3314/FLAG4f0d98786 [2021-10-13 08:03:44,359 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:03:44,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-13 08:03:44,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/10583cba3/23e3122e77fe47fab2d56874b97c3314/FLAG4f0d98786 [2021-10-13 08:03:44,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/data/10583cba3/23e3122e77fe47fab2d56874b97c3314 [2021-10-13 08:03:44,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:03:44,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:03:44,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:03:44,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:03:44,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:03:44,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2213e836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44, skipping insertion in model container [2021-10-13 08:03:44,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:03:44,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:03:44,582 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-13 08:03:44,586 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-13 08:03:44,588 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-13 08:03:44,590 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-13 08:03:44,601 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-13 08:03:44,603 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-13 08:03:44,606 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-13 08:03:44,608 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-13 08:03:44,613 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-13 08:03:44,615 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-13 08:03:44,619 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-13 08:03:44,621 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-13 08:03:44,625 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-13 08:03:44,627 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-13 08:03:44,630 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-13 08:03:44,632 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-13 08:03:44,635 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-13 08:03:44,637 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-13 08:03:44,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:03:44,652 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:03:44,669 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-13 08:03:44,671 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-13 08:03:44,673 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-13 08:03:44,674 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-13 08:03:44,676 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-13 08:03:44,678 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-13 08:03:44,680 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-13 08:03:44,682 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-13 08:03:44,685 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-13 08:03:44,687 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-13 08:03:44,689 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-13 08:03:44,691 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-13 08:03:44,693 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-13 08:03:44,695 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-13 08:03:44,697 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-13 08:03:44,699 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-13 08:03:44,702 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-13 08:03:44,703 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_5d46f632-fe2a-485b-bb45-76eb02ab83b5/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-13 08:03:44,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:03:44,721 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:03:44,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44 WrapperNode [2021-10-13 08:03:44,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:03:44,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:03:44,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:03:44,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:03:44,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:03:44,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:03:44,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:03:44,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:03:44,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:03:44,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:03:44,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:03:44,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:03:44,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (1/1) ... [2021-10-13 08:03:44,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:03:44,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:03:44,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:03:44,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:03:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:03:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:03:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:03:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:03:45,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:03:45,376 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 08:03:45,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:03:45 BoogieIcfgContainer [2021-10-13 08:03:45,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:03:45,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:03:45,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:03:45,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:03:45,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:03:44" (1/3) ... [2021-10-13 08:03:45,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad7c968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:03:45, skipping insertion in model container [2021-10-13 08:03:45,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:03:44" (2/3) ... [2021-10-13 08:03:45,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad7c968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:03:45, skipping insertion in model container [2021-10-13 08:03:45,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:03:45" (3/3) ... [2021-10-13 08:03:45,386 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2021-10-13 08:03:45,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:03:45,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-13 08:03:45,459 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:03:45,468 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 08:03:45,469 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-13 08:03:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 81 states have internal predecessors, (119), 0 states have call successors, (0), 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 08:03:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:03:45,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:45,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:45,494 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:45,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2034435078, now seen corresponding path program 1 times [2021-10-13 08:03:45,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:45,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705280350] [2021-10-13 08:03:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:45,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:45,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:45,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:45,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:03:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:45,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:03:45,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:46,422 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 08:03:46,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:47,222 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 08:03:47,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:47,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705280350] [2021-10-13 08:03:47,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705280350] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:47,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:47,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 12 [2021-10-13 08:03:47,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236552829] [2021-10-13 08:03:47,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:03:47,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:03:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:03:47,262 INFO L87 Difference]: Start difference. First operand has 82 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 81 states have internal predecessors, (119), 0 states have call successors, (0), 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 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 08:03:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:48,259 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2021-10-13 08:03:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:03:48,260 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 15 [2021-10-13 08:03:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:48,267 INFO L225 Difference]: With dead ends: 113 [2021-10-13 08:03:48,268 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 08:03:48,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 907.6ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:03:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 08:03:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-13 08:03:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 75 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 08:03:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-10-13 08:03:48,307 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 15 [2021-10-13 08:03:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:48,308 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-10-13 08:03:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 08:03:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-10-13 08:03:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:03:48,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:48,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:48,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:48,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:48,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:48,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:48,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1357026114, now seen corresponding path program 1 times [2021-10-13 08:03:48,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:48,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819640305] [2021-10-13 08:03:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:48,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:48,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:48,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:48,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:03:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:48,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:03:48,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:48,775 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 08:03:48,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:48,927 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 08:03:48,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:48,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819640305] [2021-10-13 08:03:48,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819640305] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:48,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:48,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-10-13 08:03:48,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299533522] [2021-10-13 08:03:48,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 08:03:48,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 08:03:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:03:48,931 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:49,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:49,324 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2021-10-13 08:03:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:03:49,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 08:03:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:49,327 INFO L225 Difference]: With dead ends: 173 [2021-10-13 08:03:49,328 INFO L226 Difference]: Without dead ends: 171 [2021-10-13 08:03:49,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 219.8ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:03:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-13 08:03:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 74. [2021-10-13 08:03:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 73 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 08:03:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-13 08:03:49,339 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 16 [2021-10-13 08:03:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:49,340 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-13 08:03:49,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-13 08:03:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:03:49,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:49,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:49,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:49,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:49,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:49,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:49,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1567835227, now seen corresponding path program 1 times [2021-10-13 08:03:49,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:49,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028314885] [2021-10-13 08:03:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:49,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:49,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:49,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:49,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:03:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:49,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 08:03:49,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:50,428 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 08:03:50,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:50,727 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 08:03:50,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:50,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028314885] [2021-10-13 08:03:50,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028314885] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:50,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:50,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 15 [2021-10-13 08:03:50,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448580950] [2021-10-13 08:03:50,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:03:50,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:03:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:03:50,730 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 08:03:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:51,354 INFO L93 Difference]: Finished difference Result 170 states and 177 transitions. [2021-10-13 08:03:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 08:03:51,354 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 18 [2021-10-13 08:03:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:51,356 INFO L225 Difference]: With dead ends: 170 [2021-10-13 08:03:51,356 INFO L226 Difference]: Without dead ends: 168 [2021-10-13 08:03:51,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 617.1ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-10-13 08:03:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-13 08:03:51,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 72. [2021-10-13 08:03:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 71 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 08:03:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-10-13 08:03:51,374 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 18 [2021-10-13 08:03:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:51,374 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-10-13 08:03:51,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 08:03:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-10-13 08:03:51,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 08:03:51,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:51,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:51,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:51,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:51,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:51,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1358247672, now seen corresponding path program 1 times [2021-10-13 08:03:51,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:51,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954122931] [2021-10-13 08:03:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:51,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:51,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:51,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:51,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:03:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:51,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:03:51,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:51,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:51,823 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 08:03:51,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:51,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954122931] [2021-10-13 08:03:51,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954122931] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:51,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:51,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 08:03:51,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467978990] [2021-10-13 08:03:51,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:03:51,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:03:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:03:51,826 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 08:03:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:51,944 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-10-13 08:03:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:03:51,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 19 [2021-10-13 08:03:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:51,945 INFO L225 Difference]: With dead ends: 95 [2021-10-13 08:03:51,945 INFO L226 Difference]: Without dead ends: 93 [2021-10-13 08:03:51,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:03:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-13 08:03:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70. [2021-10-13 08:03:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 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 08:03:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-10-13 08:03:51,952 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 19 [2021-10-13 08:03:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:51,953 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-10-13 08:03:51,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 08:03:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-10-13 08:03:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:03:51,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:51,954 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 08:03:51,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:52,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:52,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:52,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:52,155 INFO L82 PathProgramCache]: Analyzing trace with hash -665385716, now seen corresponding path program 1 times [2021-10-13 08:03:52,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:52,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869352699] [2021-10-13 08:03:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:52,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:52,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:52,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:03:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:52,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:03:52,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:52,382 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 08:03:52,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:52,461 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 08:03:52,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:52,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869352699] [2021-10-13 08:03:52,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869352699] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:52,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:52,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 08:03:52,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422025043] [2021-10-13 08:03:52,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:03:52,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:03:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:03:52,463 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:03:52,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:52,673 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2021-10-13 08:03:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:03:52,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:03:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:52,675 INFO L225 Difference]: With dead ends: 168 [2021-10-13 08:03:52,675 INFO L226 Difference]: Without dead ends: 166 [2021-10-13 08:03:52,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:03:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-13 08:03:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 73. [2021-10-13 08:03:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 72 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 08:03:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-10-13 08:03:52,684 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 22 [2021-10-13 08:03:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-10-13 08:03:52,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:03:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-10-13 08:03:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:03:52,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:52,685 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 08:03:52,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:52,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:52,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash -661217951, now seen corresponding path program 1 times [2021-10-13 08:03:52,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:52,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319500256] [2021-10-13 08:03:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:52,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:52,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:52,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:52,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:03:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:52,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:03:52,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:53,102 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 08:03:53,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:53,174 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 08:03:53,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:53,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319500256] [2021-10-13 08:03:53,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319500256] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:53,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:53,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 08:03:53,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502557228] [2021-10-13 08:03:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:03:53,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:03:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:03:53,175 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:03:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:53,371 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2021-10-13 08:03:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:03:53,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:03:53,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:53,373 INFO L225 Difference]: With dead ends: 120 [2021-10-13 08:03:53,373 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 08:03:53,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:03:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 08:03:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 75. [2021-10-13 08:03:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 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 08:03:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-13 08:03:53,381 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 22 [2021-10-13 08:03:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:53,381 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-13 08:03:53,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:03:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-13 08:03:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:03:53,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:53,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:53,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:53,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:53,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:53,595 INFO L82 PathProgramCache]: Analyzing trace with hash 847883539, now seen corresponding path program 1 times [2021-10-13 08:03:53,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:53,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137451514] [2021-10-13 08:03:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:53,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:53,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:53,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:03:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:53,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:03:53,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:53,828 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 08:03:53,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:53,903 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 08:03:53,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:53,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137451514] [2021-10-13 08:03:53,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137451514] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:53,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:53,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 08:03:53,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812977858] [2021-10-13 08:03:53,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:03:53,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:03:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:03:53,906 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:54,047 INFO L93 Difference]: Finished difference Result 167 states and 176 transitions. [2021-10-13 08:03:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:03:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 08:03:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:54,049 INFO L225 Difference]: With dead ends: 167 [2021-10-13 08:03:54,049 INFO L226 Difference]: Without dead ends: 165 [2021-10-13 08:03:54,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:03:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-13 08:03:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 76. [2021-10-13 08:03:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 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 08:03:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-10-13 08:03:54,057 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 23 [2021-10-13 08:03:54,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:54,057 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-10-13 08:03:54,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-10-13 08:03:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:03:54,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:54,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:54,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:54,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:54,270 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash 977084131, now seen corresponding path program 1 times [2021-10-13 08:03:54,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:54,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896492022] [2021-10-13 08:03:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:54,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:54,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:54,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:54,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:03:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:54,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:03:54,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:54,516 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 08:03:54,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:54,577 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 08:03:54,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:54,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896492022] [2021-10-13 08:03:54,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896492022] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:54,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:54,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 08:03:54,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763681544] [2021-10-13 08:03:54,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:03:54,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:54,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:03:54,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:03:54,579 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:54,686 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-10-13 08:03:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:03:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 08:03:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:54,688 INFO L225 Difference]: With dead ends: 116 [2021-10-13 08:03:54,688 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 08:03:54,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:03:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 08:03:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 77. [2021-10-13 08:03:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 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 08:03:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-10-13 08:03:54,694 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 23 [2021-10-13 08:03:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:54,694 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-10-13 08:03:54,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-10-13 08:03:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:03:54,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:54,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:54,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:54,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:54,907 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1619855478, now seen corresponding path program 1 times [2021-10-13 08:03:54,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:54,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466609310] [2021-10-13 08:03:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:54,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:54,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:54,909 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:54,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 08:03:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:55,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:03:55,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:55,114 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 08:03:55,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:55,167 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 08:03:55,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:55,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466609310] [2021-10-13 08:03:55,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466609310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:03:55,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:03:55,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:03:55,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983761356] [2021-10-13 08:03:55,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:03:55,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:03:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:03:55,169 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:55,231 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2021-10-13 08:03:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:03:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 08:03:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:55,232 INFO L225 Difference]: With dead ends: 124 [2021-10-13 08:03:55,232 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 08:03:55,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:03:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 08:03:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2021-10-13 08:03:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 79 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-10-13 08:03:55,238 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 25 [2021-10-13 08:03:55,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:55,239 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-10-13 08:03:55,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:55,239 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-10-13 08:03:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 08:03:55,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:55,240 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 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 08:03:55,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:55,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:55,448 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:03:55,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:55,449 INFO L82 PathProgramCache]: Analyzing trace with hash 595608307, now seen corresponding path program 1 times [2021-10-13 08:03:55,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:55,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048903539] [2021-10-13 08:03:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:55,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:55,451 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:55,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:03:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:55,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:03:55,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:56,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:56,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:56,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048903539] [2021-10-13 08:03:56,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048903539] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:56,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101341890] [2021-10-13 08:03:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:56,747 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:03:56,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:03:56,748 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:03:56,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 08:03:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:57,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:03:57,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:57,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:57,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2101341890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:57,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125027903] [2021-10-13 08:03:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:57,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:03:57,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:03:57,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:03:57,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 08:03:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:58,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:03:58,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:58,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:58,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125027903] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:58,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:03:58,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 11, 7, 12, 7] total 19 [2021-10-13 08:03:58,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264066919] [2021-10-13 08:03:58,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 08:03:58,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 08:03:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-13 08:03:58,929 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 08:04:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:00,179 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2021-10-13 08:04:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 08:04:00,180 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 26 [2021-10-13 08:04:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:00,181 INFO L225 Difference]: With dead ends: 123 [2021-10-13 08:04:00,181 INFO L226 Difference]: Without dead ends: 121 [2021-10-13 08:04:00,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1208.2ms TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2021-10-13 08:04:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-13 08:04:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 78. [2021-10-13 08:04:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 77 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 08:04:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-10-13 08:04:00,187 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 26 [2021-10-13 08:04:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:00,187 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-10-13 08:04:00,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 08:04:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-10-13 08:04:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 08:04:00,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:00,189 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] [2021-10-13 08:04:00,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:00,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:00,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:00,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:00,790 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:00,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:00,790 INFO L82 PathProgramCache]: Analyzing trace with hash 599776072, now seen corresponding path program 1 times [2021-10-13 08:04:00,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:00,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557609843] [2021-10-13 08:04:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:00,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:00,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:00,791 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:00,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 08:04:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:01,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:04:01,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:01,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:02,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:02,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557609843] [2021-10-13 08:04:02,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557609843] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:02,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925228355] [2021-10-13 08:04:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:02,128 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:02,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:02,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-13 08:04:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:04:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:03,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:03,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1925228355] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:03,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169330025] [2021-10-13 08:04:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:03,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:03,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:03,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:03,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 08:04:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:03,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:04:03,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:04,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:04,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169330025] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:04,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:04:04,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 11, 7, 11, 7] total 23 [2021-10-13 08:04:04,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46149528] [2021-10-13 08:04:04,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 08:04:04,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 08:04:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-10-13 08:04:04,961 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 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 08:04:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:09,925 INFO L93 Difference]: Finished difference Result 267 states and 279 transitions. [2021-10-13 08:04:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 08:04:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 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 26 [2021-10-13 08:04:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:09,928 INFO L225 Difference]: With dead ends: 267 [2021-10-13 08:04:09,928 INFO L226 Difference]: Without dead ends: 265 [2021-10-13 08:04:09,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4067.8ms TimeCoverageRelationStatistics Valid=630, Invalid=1440, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 08:04:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-13 08:04:09,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 78. [2021-10-13 08:04:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 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 08:04:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-10-13 08:04:09,938 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 26 [2021-10-13 08:04:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:09,938 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-10-13 08:04:09,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 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 08:04:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-10-13 08:04:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 08:04:09,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:09,940 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] [2021-10-13 08:04:09,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-13 08:04:10,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:10,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:10,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:10,543 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:10,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:10,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1780382557, now seen corresponding path program 1 times [2021-10-13 08:04:10,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:10,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215510930] [2021-10-13 08:04:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:10,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:10,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:10,546 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:10,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 08:04:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:10,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:04:10,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:11,642 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 08:04:11,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:11,930 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 08:04:11,930 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:11,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215510930] [2021-10-13 08:04:11,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215510930] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:11,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:11,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 12 [2021-10-13 08:04:11,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930239971] [2021-10-13 08:04:11,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:04:11,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:11,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:04:11,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:04:11,932 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 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 08:04:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:12,349 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2021-10-13 08:04:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:04:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-10-13 08:04:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:12,350 INFO L225 Difference]: With dead ends: 117 [2021-10-13 08:04:12,350 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 08:04:12,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 353.0ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-13 08:04:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 08:04:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2021-10-13 08:04:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-10-13 08:04:12,357 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 26 [2021-10-13 08:04:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:12,357 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-10-13 08:04:12,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 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 08:04:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-10-13 08:04:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 08:04:12,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:12,359 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:12,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:12,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:12,571 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:12,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1283992588, now seen corresponding path program 1 times [2021-10-13 08:04:12,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:12,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842018159] [2021-10-13 08:04:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:12,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:12,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:12,572 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:12,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 08:04:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:12,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:04:12,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:13,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:13,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:13,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842018159] [2021-10-13 08:04:13,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842018159] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:13,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [239646348] [2021-10-13 08:04:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:13,215 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:13,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:13,216 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:13,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 08:04:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:13,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:04:13,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:13,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:13,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [239646348] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:13,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066623524] [2021-10-13 08:04:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:13,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:13,934 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:13,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 08:04:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:14,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:04:14,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:14,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:14,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066623524] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:14,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:04:14,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 15 [2021-10-13 08:04:14,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800409960] [2021-10-13 08:04:14,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:04:14,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:14,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:04:14,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:04:14,677 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:15,392 INFO L93 Difference]: Finished difference Result 399 states and 422 transitions. [2021-10-13 08:04:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 08:04:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 08:04:15,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:15,413 INFO L225 Difference]: With dead ends: 399 [2021-10-13 08:04:15,413 INFO L226 Difference]: Without dead ends: 397 [2021-10-13 08:04:15,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 384.2ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-10-13 08:04:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-10-13 08:04:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 92. [2021-10-13 08:04:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 91 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 08:04:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-10-13 08:04:15,459 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 27 [2021-10-13 08:04:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:15,459 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-10-13 08:04:15,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-10-13 08:04:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 08:04:15,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:15,460 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:15,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-13 08:04:15,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:15,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-13 08:04:16,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:16,061 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:16,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1280139623, now seen corresponding path program 1 times [2021-10-13 08:04:16,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:16,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304234399] [2021-10-13 08:04:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:16,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:16,063 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:16,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 08:04:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:16,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:04:16,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:17,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:17,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:17,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304234399] [2021-10-13 08:04:17,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304234399] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:17,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976602308] [2021-10-13 08:04:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:17,389 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:17,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:17,391 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:17,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 08:04:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:18,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:04:18,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:18,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:18,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [976602308] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:18,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807809853] [2021-10-13 08:04:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:18,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:18,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:18,621 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:18,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 08:04:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:19,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:04:19,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:19,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807809853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:20,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:04:20,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 11, 7, 12, 7] total 19 [2021-10-13 08:04:20,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702748594] [2021-10-13 08:04:20,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 08:04:20,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:20,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 08:04:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-13 08:04:20,040 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:21,419 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2021-10-13 08:04:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 08:04:21,420 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 08:04:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:21,422 INFO L225 Difference]: With dead ends: 99 [2021-10-13 08:04:21,422 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 08:04:21,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1092.4ms TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2021-10-13 08:04:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 08:04:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2021-10-13 08:04:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 89 states have internal predecessors, (100), 0 states have call successors, (0), 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 08:04:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2021-10-13 08:04:21,431 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 27 [2021-10-13 08:04:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:21,431 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2021-10-13 08:04:21,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:21,431 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2021-10-13 08:04:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 08:04:21,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:21,432 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 08:04:21,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:21,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-13 08:04:21,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:22,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:22,036 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:22,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1413193180, now seen corresponding path program 1 times [2021-10-13 08:04:22,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:22,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208405241] [2021-10-13 08:04:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:22,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:22,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:22,037 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:22,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 08:04:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:22,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:04:22,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:22,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:22,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:22,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208405241] [2021-10-13 08:04:22,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208405241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:22,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [427027639] [2021-10-13 08:04:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:22,831 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:22,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:22,832 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:22,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-13 08:04:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:23,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:04:23,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:23,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:23,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [427027639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:23,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193486599] [2021-10-13 08:04:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:23,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:23,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:23,723 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:23,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 08:04:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:24,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:04:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:24,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:24,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193486599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:24,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-13 08:04:24,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7, 7, 7] total 17 [2021-10-13 08:04:24,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539754084] [2021-10-13 08:04:24,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:04:24,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:24,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:04:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:04:24,623 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:24,940 INFO L93 Difference]: Finished difference Result 187 states and 200 transitions. [2021-10-13 08:04:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:04:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 08:04:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:24,941 INFO L225 Difference]: With dead ends: 187 [2021-10-13 08:04:24,941 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 08:04:24,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 360.2ms TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2021-10-13 08:04:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 08:04:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 90. [2021-10-13 08:04:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 89 states have internal predecessors, (96), 0 states have call successors, (0), 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 08:04:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-10-13 08:04:24,951 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 27 [2021-10-13 08:04:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:24,951 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-10-13 08:04:24,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-10-13 08:04:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 08:04:24,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:24,952 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 08:04:24,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:25,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-10-13 08:04:25,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:25,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:25,564 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash -642711428, now seen corresponding path program 1 times [2021-10-13 08:04:25,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:25,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982754662] [2021-10-13 08:04:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:25,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:25,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:25,566 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:25,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 08:04:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:26,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:04:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:26,253 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 08:04:26,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:26,398 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 08:04:26,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:26,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982754662] [2021-10-13 08:04:26,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982754662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:26,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:26,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 08:04:26,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213350438] [2021-10-13 08:04:26,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:04:26,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:04:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:04:26,400 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:26,710 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2021-10-13 08:04:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 08:04:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 08:04:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:26,712 INFO L225 Difference]: With dead ends: 180 [2021-10-13 08:04:26,712 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 08:04:26,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 160.4ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:04:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 08:04:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 93. [2021-10-13 08:04:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 92 states have internal predecessors, (100), 0 states have call successors, (0), 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 08:04:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-10-13 08:04:26,722 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 27 [2021-10-13 08:04:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:26,722 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-10-13 08:04:26,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-10-13 08:04:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:04:26,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:26,724 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:26,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:26,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:26,937 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:26,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1628990916, now seen corresponding path program 1 times [2021-10-13 08:04:26,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:26,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089547747] [2021-10-13 08:04:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:26,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:26,940 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:26,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 08:04:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:27,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 08:04:27,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:29,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:29,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:29,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089547747] [2021-10-13 08:04:29,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089547747] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 08:04:29,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 08:04:29,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2021-10-13 08:04:29,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367862307] [2021-10-13 08:04:29,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:04:29,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:29,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:04:29,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-13 08:04:29,382 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:29,689 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2021-10-13 08:04:29,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:04:29,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 08:04:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:29,691 INFO L225 Difference]: With dead ends: 115 [2021-10-13 08:04:29,691 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 08:04:29,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 908.5ms TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-13 08:04:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 08:04:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2021-10-13 08:04:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 85 states have internal predecessors, (92), 0 states have call successors, (0), 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 08:04:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-10-13 08:04:29,698 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 30 [2021-10-13 08:04:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:29,698 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-10-13 08:04:29,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-10-13 08:04:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:04:29,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:29,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:29,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:29,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:29,913 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash -47880409, now seen corresponding path program 1 times [2021-10-13 08:04:29,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:29,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680894084] [2021-10-13 08:04:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:29,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:29,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:29,914 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:29,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 08:04:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:30,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 08:04:30,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:30,909 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 08:04:30,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:31,043 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 08:04:31,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:31,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680894084] [2021-10-13 08:04:31,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680894084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:31,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:31,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 15 [2021-10-13 08:04:31,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289948739] [2021-10-13 08:04:31,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:04:31,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:04:31,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:04:31,046 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 08:04:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:31,918 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2021-10-13 08:04:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 08:04:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 08:04:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:31,920 INFO L225 Difference]: With dead ends: 115 [2021-10-13 08:04:31,920 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 08:04:31,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 704.7ms TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2021-10-13 08:04:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 08:04:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2021-10-13 08:04:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 83 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 08:04:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2021-10-13 08:04:31,927 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 30 [2021-10-13 08:04:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:31,928 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2021-10-13 08:04:31,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 08:04:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2021-10-13 08:04:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 08:04:31,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:31,929 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 08:04:31,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:32,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:32,129 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:32,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1484288504, now seen corresponding path program 1 times [2021-10-13 08:04:32,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:32,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212697442] [2021-10-13 08:04:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:32,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:32,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:32,131 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:32,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 08:04:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:32,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:04:32,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:32,884 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 08:04:32,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:33,032 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 08:04:33,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:33,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212697442] [2021-10-13 08:04:33,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212697442] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:33,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:33,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-13 08:04:33,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722315659] [2021-10-13 08:04:33,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:04:33,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:04:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:04:33,034 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 08:04:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:33,532 INFO L93 Difference]: Finished difference Result 257 states and 271 transitions. [2021-10-13 08:04:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 08:04:33,532 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 31 [2021-10-13 08:04:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:33,534 INFO L225 Difference]: With dead ends: 257 [2021-10-13 08:04:33,534 INFO L226 Difference]: Without dead ends: 255 [2021-10-13 08:04:33,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 255.5ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-13 08:04:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-13 08:04:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 94. [2021-10-13 08:04:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 93 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 08:04:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2021-10-13 08:04:33,543 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 31 [2021-10-13 08:04:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:33,544 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2021-10-13 08:04:33,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 08:04:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2021-10-13 08:04:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 08:04:33,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:33,545 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:33,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:33,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:33,758 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:33,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1571147844, now seen corresponding path program 1 times [2021-10-13 08:04:33,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:33,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705029170] [2021-10-13 08:04:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:33,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:33,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:33,760 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:33,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 08:04:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:34,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:04:34,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:34,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:34,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:34,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705029170] [2021-10-13 08:04:34,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705029170] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:34,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1829860427] [2021-10-13 08:04:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:34,799 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:34,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:34,800 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:34,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-10-13 08:04:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:35,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:04:35,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:35,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:35,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1829860427] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:35,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023521289] [2021-10-13 08:04:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:35,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:35,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:35,946 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:35,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 08:04:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:36,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:04:36,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:04:37,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:04:37,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023521289] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 08:04:37,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-13 08:04:37,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 8, 8, 9] total 22 [2021-10-13 08:04:37,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063474831] [2021-10-13 08:04:37,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:04:37,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:04:37,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-13 08:04:37,279 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 08:04:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:37,520 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-10-13 08:04:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:04:37,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 32 [2021-10-13 08:04:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:37,525 INFO L225 Difference]: With dead ends: 101 [2021-10-13 08:04:37,525 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 08:04:37,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 529.6ms TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-13 08:04:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 08:04:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2021-10-13 08:04:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-10-13 08:04:37,537 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 32 [2021-10-13 08:04:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:37,537 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-10-13 08:04:37,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 08:04:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-10-13 08:04:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 08:04:37,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:37,539 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] [2021-10-13 08:04:37,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:37,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:37,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:38,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:38,154 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:38,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1746453711, now seen corresponding path program 1 times [2021-10-13 08:04:38,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:38,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505354190] [2021-10-13 08:04:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:38,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:38,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:38,156 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:38,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 08:04:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:38,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:04:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:38,966 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 08:04:38,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:39,057 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 08:04:39,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:39,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505354190] [2021-10-13 08:04:39,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505354190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:39,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:39,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 08:04:39,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826407009] [2021-10-13 08:04:39,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:04:39,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:39,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:04:39,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:04:39,060 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:39,209 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2021-10-13 08:04:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:04:39,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 08:04:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:39,210 INFO L225 Difference]: With dead ends: 116 [2021-10-13 08:04:39,211 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 08:04:39,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:04:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 08:04:39,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2021-10-13 08:04:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 86 states have (on average 1.186046511627907) internal successors, (102), 94 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 08:04:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-10-13 08:04:39,222 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 34 [2021-10-13 08:04:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:39,223 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-10-13 08:04:39,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-10-13 08:04:39,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 08:04:39,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:39,224 INFO L512 BasicCegarLoop]: trace histogram [3, 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 08:04:39,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-13 08:04:39,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:39,437 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -484060946, now seen corresponding path program 1 times [2021-10-13 08:04:39,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:39,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065017950] [2021-10-13 08:04:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:39,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:39,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:39,439 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:39,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 08:04:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:40,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:04:40,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:40,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:40,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:40,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065017950] [2021-10-13 08:04:40,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065017950] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:40,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1664158009] [2021-10-13 08:04:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:40,548 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:40,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:40,549 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:40,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-10-13 08:04:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:41,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:04:41,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:41,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:41,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1664158009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:41,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542216992] [2021-10-13 08:04:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:41,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:41,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:41,887 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:41,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 08:04:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:42,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 08:04:42,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 08:04:43,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 08:04:43,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542216992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:43,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-13 08:04:43,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [8, 8, 8, 8] total 21 [2021-10-13 08:04:43,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664863652] [2021-10-13 08:04:43,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:04:43,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:04:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 08:04:43,226 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 08:04:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:43,665 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2021-10-13 08:04:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 08:04:43,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 08:04:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:43,666 INFO L225 Difference]: With dead ends: 113 [2021-10-13 08:04:43,666 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 08:04:43,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 577.1ms TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-10-13 08:04:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 08:04:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2021-10-13 08:04:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 86 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-10-13 08:04:43,675 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 35 [2021-10-13 08:04:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:43,675 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-10-13 08:04:43,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 08:04:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-10-13 08:04:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 08:04:43,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:43,676 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] [2021-10-13 08:04:43,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:43,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-13 08:04:44,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:44,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:44,280 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1694514003, now seen corresponding path program 1 times [2021-10-13 08:04:44,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:44,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140472411] [2021-10-13 08:04:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:44,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:44,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:44,282 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:44,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 08:04:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:45,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:04:45,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:45,288 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 08:04:45,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:45,464 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 08:04:45,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:45,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140472411] [2021-10-13 08:04:45,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140472411] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:45,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:45,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-13 08:04:45,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055582664] [2021-10-13 08:04:45,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:04:45,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:45,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:04:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:04:45,466 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:46,061 INFO L93 Difference]: Finished difference Result 227 states and 241 transitions. [2021-10-13 08:04:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 08:04:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 08:04:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:46,063 INFO L225 Difference]: With dead ends: 227 [2021-10-13 08:04:46,063 INFO L226 Difference]: Without dead ends: 225 [2021-10-13 08:04:46,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 299.9ms TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-10-13 08:04:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-13 08:04:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 137. [2021-10-13 08:04:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 129 states have (on average 1.2015503875968991) internal successors, (155), 136 states have internal predecessors, (155), 0 states have call successors, (0), 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 08:04:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2021-10-13 08:04:46,088 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 35 [2021-10-13 08:04:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:46,088 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2021-10-13 08:04:46,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2021-10-13 08:04:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:04:46,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:46,089 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 08:04:46,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-13 08:04:46,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:46,302 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:46,303 INFO L82 PathProgramCache]: Analyzing trace with hash 635482230, now seen corresponding path program 1 times [2021-10-13 08:04:46,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:46,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419626467] [2021-10-13 08:04:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:46,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:46,304 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:46,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 08:04:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:47,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:04:47,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:47,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:47,875 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 08:04:47,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:47,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419626467] [2021-10-13 08:04:47,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419626467] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:47,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:47,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-10-13 08:04:47,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282173315] [2021-10-13 08:04:47,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 08:04:47,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 08:04:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:04:47,877 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 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 08:04:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:48,048 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2021-10-13 08:04:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:04:48,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 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 08:04:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:48,049 INFO L225 Difference]: With dead ends: 164 [2021-10-13 08:04:48,049 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 08:04:48,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 201.4ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-10-13 08:04:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 08:04:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 135. [2021-10-13 08:04:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 128 states have (on average 1.1796875) internal successors, (151), 134 states have internal predecessors, (151), 0 states have call successors, (0), 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 08:04:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2021-10-13 08:04:48,068 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 37 [2021-10-13 08:04:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:48,068 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2021-10-13 08:04:48,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 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 08:04:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2021-10-13 08:04:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 08:04:48,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:48,069 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] [2021-10-13 08:04:48,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:48,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:48,276 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1774883137, now seen corresponding path program 1 times [2021-10-13 08:04:48,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:48,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951276002] [2021-10-13 08:04:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:48,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:48,279 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:48,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 08:04:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:49,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:04:49,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:49,157 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 08:04:49,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:49,240 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 08:04:49,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:49,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951276002] [2021-10-13 08:04:49,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951276002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:49,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:49,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 08:04:49,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143706250] [2021-10-13 08:04:49,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:04:49,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:04:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:04:49,241 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:49,318 INFO L93 Difference]: Finished difference Result 194 states and 221 transitions. [2021-10-13 08:04:49,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:04:49,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 08:04:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:49,320 INFO L225 Difference]: With dead ends: 194 [2021-10-13 08:04:49,320 INFO L226 Difference]: Without dead ends: 192 [2021-10-13 08:04:49,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:04:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-13 08:04:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 133. [2021-10-13 08:04:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 132 states have internal predecessors, (147), 0 states have call successors, (0), 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 08:04:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2021-10-13 08:04:49,337 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 38 [2021-10-13 08:04:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:49,338 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2021-10-13 08:04:49,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2021-10-13 08:04:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 08:04:49,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:49,339 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:49,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:49,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:49,552 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash -576729609, now seen corresponding path program 2 times [2021-10-13 08:04:49,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:49,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033995291] [2021-10-13 08:04:49,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:04:49,553 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:49,554 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:49,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 08:04:50,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:04:50,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:04:50,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:04:50,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:50,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:51,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:51,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033995291] [2021-10-13 08:04:51,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033995291] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:51,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [608426721] [2021-10-13 08:04:51,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:04:51,161 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:51,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:51,162 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:51,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-10-13 08:04:52,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:04:52,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:04:52,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:04:52,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:52,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:52,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [608426721] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:52,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385806350] [2021-10-13 08:04:52,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:04:52,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:52,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:52,885 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:52,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 08:04:53,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:04:53,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:04:53,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:04:53,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 08:04:54,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 08:04:54,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385806350] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:54,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:04:54,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10, 10, 9, 7] total 35 [2021-10-13 08:04:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910063134] [2021-10-13 08:04:54,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 08:04:54,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 08:04:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 08:04:54,780 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 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 08:04:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:59,148 INFO L93 Difference]: Finished difference Result 483 states and 511 transitions. [2021-10-13 08:04:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 08:04:59,149 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 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 39 [2021-10-13 08:04:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:59,151 INFO L225 Difference]: With dead ends: 483 [2021-10-13 08:04:59,151 INFO L226 Difference]: Without dead ends: 481 [2021-10-13 08:04:59,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 3700.3ms TimeCoverageRelationStatistics Valid=1714, Invalid=3986, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 08:04:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-10-13 08:04:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 125. [2021-10-13 08:04:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.15) internal successors, (138), 124 states have internal predecessors, (138), 0 states have call successors, (0), 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 08:04:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2021-10-13 08:04:59,170 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 39 [2021-10-13 08:04:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:59,170 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2021-10-13 08:04:59,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 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 08:04:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2021-10-13 08:04:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 08:04:59,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:59,172 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] [2021-10-13 08:04:59,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:59,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2021-10-13 08:04:59,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-13 08:04:59,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:59,781 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:04:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash 813201821, now seen corresponding path program 1 times [2021-10-13 08:04:59,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:59,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051885042] [2021-10-13 08:04:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:59,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:59,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:59,783 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:59,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 08:05:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:00,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:05:00,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:00,791 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 08:05:00,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:00,890 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 08:05:00,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:00,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051885042] [2021-10-13 08:05:00,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051885042] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:00,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:00,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 08:05:00,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423016985] [2021-10-13 08:05:00,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:05:00,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:05:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:05:00,893 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:01,064 INFO L93 Difference]: Finished difference Result 190 states and 213 transitions. [2021-10-13 08:05:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:05:01,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 08:05:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:01,065 INFO L225 Difference]: With dead ends: 190 [2021-10-13 08:05:01,065 INFO L226 Difference]: Without dead ends: 188 [2021-10-13 08:05:01,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:05:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-13 08:05:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 136. [2021-10-13 08:05:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.1526717557251909) internal successors, (151), 135 states have internal predecessors, (151), 0 states have call successors, (0), 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 08:05:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-10-13 08:05:01,085 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 39 [2021-10-13 08:05:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:01,086 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-10-13 08:05:01,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-10-13 08:05:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 08:05:01,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:01,086 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 08:05:01,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-13 08:05:01,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:05:01,287 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:01,287 INFO L82 PathProgramCache]: Analyzing trace with hash -560543098, now seen corresponding path program 1 times [2021-10-13 08:05:01,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:01,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335495730] [2021-10-13 08:05:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:01,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:01,289 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:01,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 08:05:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:02,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:05:02,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:02,420 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 08:05:02,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:02,604 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 08:05:02,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:02,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335495730] [2021-10-13 08:05:02,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335495730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:02,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:02,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-13 08:05:02,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485809568] [2021-10-13 08:05:02,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:05:02,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:05:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:05:02,605 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 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 08:05:03,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:03,188 INFO L93 Difference]: Finished difference Result 277 states and 300 transitions. [2021-10-13 08:05:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 08:05:03,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 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 08:05:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:03,190 INFO L225 Difference]: With dead ends: 277 [2021-10-13 08:05:03,190 INFO L226 Difference]: Without dead ends: 275 [2021-10-13 08:05:03,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 285.2ms TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-10-13 08:05:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-13 08:05:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 145. [2021-10-13 08:05:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.15) internal successors, (161), 144 states have internal predecessors, (161), 0 states have call successors, (0), 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 08:05:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2021-10-13 08:05:03,211 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 40 [2021-10-13 08:05:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:03,211 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2021-10-13 08:05:03,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 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 08:05:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2021-10-13 08:05:03,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 08:05:03,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:03,213 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 08:05:03,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:03,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:05:03,426 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash 375780089, now seen corresponding path program 1 times [2021-10-13 08:05:03,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:03,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11451307] [2021-10-13 08:05:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:03,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:03,435 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:03,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 08:05:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:04,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 08:05:04,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:06,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:06,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:06,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11451307] [2021-10-13 08:05:06,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11451307] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:06,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [765801619] [2021-10-13 08:05:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:06,451 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:05:06,452 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:05:06,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-10-13 08:05:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:07,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 08:05:07,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:09,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:09,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [765801619] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:09,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985484585] [2021-10-13 08:05:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:09,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:09,425 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:05:09,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 08:05:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:10,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 08:05:10,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:12,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:12,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985484585] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:12,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:05:12,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7, 14, 7, 14, 8] total 35 [2021-10-13 08:05:12,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985992987] [2021-10-13 08:05:12,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 08:05:12,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 08:05:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 08:05:12,927 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 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 08:05:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:20,822 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-13 08:05:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 08:05:20,824 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 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 08:05:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:20,825 INFO L225 Difference]: With dead ends: 154 [2021-10-13 08:05:20,825 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 08:05:20,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 8158.7ms TimeCoverageRelationStatistics Valid=911, Invalid=2059, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 08:05:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 08:05:20,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2021-10-13 08:05:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 140 states have internal predecessors, (155), 0 states have call successors, (0), 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 08:05:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2021-10-13 08:05:20,846 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 40 [2021-10-13 08:05:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:20,846 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2021-10-13 08:05:20,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 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 08:05:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2021-10-13 08:05:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 08:05:20,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:20,847 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 08:05:20,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:21,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:21,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:21,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:21,462 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:21,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1394778411, now seen corresponding path program 1 times [2021-10-13 08:05:21,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:21,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403263170] [2021-10-13 08:05:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:21,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:21,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:21,465 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:21,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 08:05:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:22,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:05:22,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:05:22,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:05:22,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:22,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403263170] [2021-10-13 08:05:22,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403263170] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:22,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:22,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 08:05:22,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804195187] [2021-10-13 08:05:22,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:05:22,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:05:22,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:05:22,782 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:22,992 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2021-10-13 08:05:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:05:22,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 08:05:22,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:22,994 INFO L225 Difference]: With dead ends: 167 [2021-10-13 08:05:22,994 INFO L226 Difference]: Without dead ends: 165 [2021-10-13 08:05:22,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:05:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-13 08:05:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 115. [2021-10-13 08:05:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.0884955752212389) internal successors, (123), 114 states have internal predecessors, (123), 0 states have call successors, (0), 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 08:05:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2021-10-13 08:05:23,010 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 45 [2021-10-13 08:05:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:23,011 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2021-10-13 08:05:23,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2021-10-13 08:05:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 08:05:23,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:23,012 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:23,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:23,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:05:23,227 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:23,227 INFO L82 PathProgramCache]: Analyzing trace with hash 330875454, now seen corresponding path program 1 times [2021-10-13 08:05:23,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:23,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120735398] [2021-10-13 08:05:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:23,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:23,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:23,228 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:23,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 08:05:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:24,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:05:24,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:24,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:25,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:25,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120735398] [2021-10-13 08:05:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120735398] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:25,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [846606195] [2021-10-13 08:05:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:25,013 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:25,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:05:25,015 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:05:25,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2021-10-13 08:05:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:26,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:05:26,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 08:05:26,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 08:05:26,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [846606195] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:26,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:05:26,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10] total 20 [2021-10-13 08:05:26,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929819965] [2021-10-13 08:05:26,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:05:26,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:05:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 08:05:26,863 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 08:05:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:27,010 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2021-10-13 08:05:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:05:27,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 08:05:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:27,018 INFO L225 Difference]: With dead ends: 154 [2021-10-13 08:05:27,018 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 08:05:27,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 388.3ms TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 08:05:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 08:05:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 119. [2021-10-13 08:05:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.0854700854700854) internal successors, (127), 118 states have internal predecessors, (127), 0 states have call successors, (0), 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 08:05:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-10-13 08:05:27,035 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 47 [2021-10-13 08:05:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:27,035 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-10-13 08:05:27,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 08:05:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-10-13 08:05:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 08:05:27,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:27,036 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-10-13 08:05:27,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:27,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:27,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:05:27,441 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1859558781, now seen corresponding path program 1 times [2021-10-13 08:05:27,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:27,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760252397] [2021-10-13 08:05:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:27,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:27,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:27,443 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:27,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-13 08:05:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:28,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:05:28,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:28,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:29,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:29,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760252397] [2021-10-13 08:05:29,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760252397] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:29,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [771898567] [2021-10-13 08:05:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:29,301 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:29,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:05:29,302 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:05:29,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2021-10-13 08:05:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:30,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:05:30,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:31,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:31,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [771898567] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:31,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952877189] [2021-10-13 08:05:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:31,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:31,414 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:05:31,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 08:05:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:32,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:05:32,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 08:05:33,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 08:05:33,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952877189] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:33,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:05:33,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 7] total 27 [2021-10-13 08:05:33,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256915679] [2021-10-13 08:05:33,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 08:05:33,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 08:05:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-10-13 08:05:33,675 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 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 08:05:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:43,553 INFO L93 Difference]: Finished difference Result 700 states and 785 transitions. [2021-10-13 08:05:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-13 08:05:43,553 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 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 49 [2021-10-13 08:05:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:43,556 INFO L225 Difference]: With dead ends: 700 [2021-10-13 08:05:43,556 INFO L226 Difference]: Without dead ends: 698 [2021-10-13 08:05:43,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4414 ImplicationChecksByTransitivity, 7735.8ms TimeCoverageRelationStatistics Valid=2887, Invalid=10453, Unknown=0, NotChecked=0, Total=13340 [2021-10-13 08:05:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-10-13 08:05:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 247. [2021-10-13 08:05:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.1346938775510205) internal successors, (278), 246 states have internal predecessors, (278), 0 states have call successors, (0), 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 08:05:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 278 transitions. [2021-10-13 08:05:43,618 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 278 transitions. Word has length 49 [2021-10-13 08:05:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:43,619 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 278 transitions. [2021-10-13 08:05:43,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 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 08:05:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 278 transitions. [2021-10-13 08:05:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 08:05:43,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:43,620 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:43,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:43,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2021-10-13 08:05:44,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-13 08:05:44,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:44,221 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:44,221 INFO L82 PathProgramCache]: Analyzing trace with hash -582689157, now seen corresponding path program 1 times [2021-10-13 08:05:44,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:44,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194965960] [2021-10-13 08:05:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:44,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:44,223 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:44,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-13 08:05:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:45,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:05:45,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:45,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:46,187 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:46,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194965960] [2021-10-13 08:05:46,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194965960] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:46,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1202876818] [2021-10-13 08:05:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:46,187 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:46,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:05:46,188 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:05:46,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2021-10-13 08:05:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:47,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:05:47,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 08:05:48,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 08:05:48,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1202876818] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:48,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:05:48,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10] total 20 [2021-10-13 08:05:48,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376737250] [2021-10-13 08:05:48,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:05:48,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:05:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 08:05:48,231 INFO L87 Difference]: Start difference. First operand 247 states and 278 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:48,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:48,436 INFO L93 Difference]: Finished difference Result 470 states and 523 transitions. [2021-10-13 08:05:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:05:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 08:05:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:48,438 INFO L225 Difference]: With dead ends: 470 [2021-10-13 08:05:48,438 INFO L226 Difference]: Without dead ends: 468 [2021-10-13 08:05:48,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 370.6ms TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 08:05:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-13 08:05:48,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 224. [2021-10-13 08:05:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.135135135135135) internal successors, (252), 223 states have internal predecessors, (252), 0 states have call successors, (0), 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 08:05:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2021-10-13 08:05:48,479 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 52 [2021-10-13 08:05:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:48,480 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2021-10-13 08:05:48,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2021-10-13 08:05:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 08:05:48,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:48,481 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-10-13 08:05:48,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:48,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (56)] Ended with exit code 0 [2021-10-13 08:05:48,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:48,897 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:48,898 INFO L82 PathProgramCache]: Analyzing trace with hash 219755164, now seen corresponding path program 1 times [2021-10-13 08:05:48,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:48,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350702931] [2021-10-13 08:05:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:48,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:48,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:48,899 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:48,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-13 08:05:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:50,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:05:50,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:50,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:50,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:50,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350702931] [2021-10-13 08:05:50,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350702931] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:50,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [369087130] [2021-10-13 08:05:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:50,956 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:50,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:05:50,957 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:05:50,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2021-10-13 08:05:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:52,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:05:52,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 08:05:52,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 08:05:53,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [369087130] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:53,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:05:53,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10] total 20 [2021-10-13 08:05:53,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698751962] [2021-10-13 08:05:53,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:05:53,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:05:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 08:05:53,092 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:53,280 INFO L93 Difference]: Finished difference Result 348 states and 389 transitions. [2021-10-13 08:05:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:05:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-13 08:05:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:53,282 INFO L225 Difference]: With dead ends: 348 [2021-10-13 08:05:53,282 INFO L226 Difference]: Without dead ends: 346 [2021-10-13 08:05:53,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 394.0ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-13 08:05:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-10-13 08:05:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 148. [2021-10-13 08:05:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.08843537414966) internal successors, (160), 147 states have internal predecessors, (160), 0 states have call successors, (0), 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 08:05:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 160 transitions. [2021-10-13 08:05:53,332 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 160 transitions. Word has length 54 [2021-10-13 08:05:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:53,332 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 160 transitions. [2021-10-13 08:05:53,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 160 transitions. [2021-10-13 08:05:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 08:05:53,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:53,333 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:53,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:53,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2021-10-13 08:05:53,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:53,749 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-13 08:05:53,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:53,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1994644805, now seen corresponding path program 1 times [2021-10-13 08:05:53,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:53,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781365025] [2021-10-13 08:05:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:53,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:53,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:53,751 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:53,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-13 08:05:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:55,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 08:05:55,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:57,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:59,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:59,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781365025] [2021-10-13 08:05:59,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781365025] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:59,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [190239965] [2021-10-13 08:05:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:59,168 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:59,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:05:59,174 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:05:59,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2021-10-13 08:06:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:01,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 08:06:01,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:03,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:04,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [190239965] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:04,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446781287] [2021-10-13 08:06:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:04,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:04,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:06:04,289 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:06:04,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 08:06:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:06,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:06:06,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-10-13 08:06:07,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-10-13 08:06:07,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446781287] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:07,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:06:07,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 18, 18, 10, 7] total 66 [2021-10-13 08:06:07,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466371468] [2021-10-13 08:06:07,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-13 08:06:07,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-13 08:06:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=3541, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 08:06:07,696 INFO L87 Difference]: Start difference. First operand 148 states and 160 transitions. Second operand has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 66 states have internal predecessors, (382), 0 states have call successors, (0), 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 08:07:18,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:18,470 INFO L93 Difference]: Finished difference Result 1525 states and 1675 transitions. [2021-10-13 08:07:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2021-10-13 08:07:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 66 states have internal predecessors, (382), 0 states have call successors, (0), 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 101 [2021-10-13 08:07:18,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:18,471 INFO L225 Difference]: With dead ends: 1525 [2021-10-13 08:07:18,471 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:07:18,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27629 ImplicationChecksByTransitivity, 64232.0ms TimeCoverageRelationStatistics Valid=17164, Invalid=64346, Unknown=0, NotChecked=0, Total=81510 [2021-10-13 08:07:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:07:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:07:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 08:07:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:07:18,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2021-10-13 08:07:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:18,485 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:07:18,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 66 states have internal predecessors, (382), 0 states have call successors, (0), 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 08:07:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:07:18,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:07:18,488 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,488 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,488 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:18,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (60)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:18,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:18,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-10-13 08:07:19,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:19,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:07:19,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:07:19,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:07:27,335 WARN L207 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 607 DAG size of output: 496 [2021-10-13 08:07:27,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:07:34,301 WARN L207 SmtUtils]: Spent 6.96 s on a formula simplification. DAG size of input: 615 DAG size of output: 534 [2021-10-13 08:07:34,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:07:34,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:07:34,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:07:48,065 WARN L207 SmtUtils]: Spent 12.83 s on a formula simplification. DAG size of input: 486 DAG size of output: 110 [2021-10-13 08:08:00,188 WARN L207 SmtUtils]: Spent 12.12 s on a formula simplification. DAG size of input: 523 DAG size of output: 91 [2021-10-13 08:08:02,688 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2021-10-13 08:08:02,689 INFO L857 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2021-10-13 08:08:02,689 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 338) no Hoare annotation was computed. [2021-10-13 08:08:02,689 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 272) no Hoare annotation was computed. [2021-10-13 08:08:02,689 INFO L857 garLoopResultBuilder]: For program point L135(lines 135 397) no Hoare annotation was computed. [2021-10-13 08:08:02,689 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point L284(line 284) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 433) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point L384(lines 384 393) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L853 garLoopResultBuilder]: At program point L401(lines 131 402) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32))) (.cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32))) (.cse3 (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv1 32))) (.cse2 (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32))) (.cse4 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse5 (not (= ULTIMATE.start_main_~main__scheme~0 (_ bv0 32)))) (.cse6 (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (.cse8 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32))) (.cse9 (bvsgt ULTIMATE.start_main_~main__urilen~0 (_ bv0 32))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) (or (let ((.cse7 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (and (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32)) .cse0 .cse1 .cse2 (bvslt .cse3 ULTIMATE.start_main_~main__urilen~0) .cse4 .cse5 .cse6 (bvsle (_ bv0 32) .cse7) .cse8 (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32)) .cse9 (bvslt .cse7 ULTIMATE.start_main_~main__urilen~0) .cse10)) (and .cse0 .cse1 (= ULTIMATE.start_main_~main__urilen~0 .cse3) .cse2 .cse4 .cse5 .cse6 .cse8 .cse9 .cse10))) [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 411) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point L71(lines 71 416) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point L253(lines 253 329) no Hoare annotation was computed. [2021-10-13 08:08:02,690 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 355) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 386) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 322) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 353) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L386(line 386) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 360) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 438) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L255(line 255) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 403) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 214) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L272(line 272) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 435) no Hoare annotation was computed. [2021-10-13 08:08:02,691 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:08:02,692 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2021-10-13 08:08:02,692 INFO L857 garLoopResultBuilder]: For program point L157(line 157) no Hoare annotation was computed. [2021-10-13 08:08:02,692 INFO L857 garLoopResultBuilder]: For program point L372(lines 372 395) no Hoare annotation was computed. [2021-10-13 08:08:02,692 INFO L857 garLoopResultBuilder]: For program point L306(lines 306 316) no Hoare annotation was computed. [2021-10-13 08:08:02,692 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 344) no Hoare annotation was computed. [2021-10-13 08:08:02,692 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-13 08:08:02,692 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 432) no Hoare annotation was computed. [2021-10-13 08:08:02,693 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2021-10-13 08:08:02,693 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 331) no Hoare annotation was computed. [2021-10-13 08:08:02,693 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 357) no Hoare annotation was computed. [2021-10-13 08:08:02,693 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 284) no Hoare annotation was computed. [2021-10-13 08:08:02,693 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 226) no Hoare annotation was computed. [2021-10-13 08:08:02,693 INFO L857 garLoopResultBuilder]: For program point L374(line 374) no Hoare annotation was computed. [2021-10-13 08:08:02,693 INFO L857 garLoopResultBuilder]: For program point L308(line 308) no Hoare annotation was computed. [2021-10-13 08:08:02,694 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 362) no Hoare annotation was computed. [2021-10-13 08:08:02,694 INFO L857 garLoopResultBuilder]: For program point L226(line 226) no Hoare annotation was computed. [2021-10-13 08:08:02,694 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 145) no Hoare annotation was computed. [2021-10-13 08:08:02,694 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 427) no Hoare annotation was computed. [2021-10-13 08:08:02,694 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:08:02,694 INFO L857 garLoopResultBuilder]: For program point L243(line 243) no Hoare annotation was computed. [2021-10-13 08:08:02,694 INFO L857 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2021-10-13 08:08:02,695 INFO L857 garLoopResultBuilder]: For program point L111(lines 111 405) no Hoare annotation was computed. [2021-10-13 08:08:02,695 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2021-10-13 08:08:02,695 INFO L853 garLoopResultBuilder]: At program point L392(lines 129 403) the Hoare annotation is: (let ((.cse0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (and (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32)) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32)) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32)) (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32)) (bvslt ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32)) (not (= ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32)) (bvsle (_ bv0 32) .cse0) (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32)) (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32)) (bvslt .cse0 ULTIMATE.start_main_~main__urilen~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) [2021-10-13 08:08:02,695 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 354) no Hoare annotation was computed. [2021-10-13 08:08:02,695 INFO L857 garLoopResultBuilder]: For program point L95(lines 95 412) no Hoare annotation was computed. [2021-10-13 08:08:02,695 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 437) no Hoare annotation was computed. [2021-10-13 08:08:02,696 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2021-10-13 08:08:02,696 INFO L857 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2021-10-13 08:08:02,696 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2021-10-13 08:08:02,696 INFO L853 garLoopResultBuilder]: At program point L327(lines 262 328) the Hoare annotation is: (let ((.cse6 (= ULTIMATE.start_main_~main__c~0 (_ bv0 32)))) (let ((.cse2 (let ((.cse25 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (let ((.cse7 (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32))) (.cse8 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32))) (.cse9 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv0 32)))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 (_ bv1 32))) (.cse11 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32))) (.cse12 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv0 32)))) (.cse13 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv0 32)))) (.cse14 (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32))) (.cse15 (bvslt (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv1 32)) ULTIMATE.start_main_~main__urilen~0)) (.cse16 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 (_ bv1 32))) (.cse17 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse18 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~4 (_ bv1 32))) (.cse19 (bvsge .cse25 (_ bv0 32))) (.cse20 (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (.cse21 (bvsle .cse25 (_ bv1000000 32))) (.cse22 (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32))) (.cse23 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 (_ bv0 32)))) (.cse24 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) (or (and .cse7 .cse6 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (bvslt ULTIMATE.start_main_~main__c~0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__tokenlen~0)) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse7 .cse8 .cse9 .cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 (_ bv1 32)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24)))))) (let ((.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv1 32))) (.cse3 (and .cse6 .cse2)) (.cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 (_ bv1 32))) (.cse4 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32))) (.cse5 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv1 32)) .cse0 (or (and .cse1 (= ULTIMATE.start_main_~main__c~0 (_ bv1 32)) .cse2) .cse3) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv1 32)) (bvsle (_ bv0 32) (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv4294967294 32))) .cse4 .cse5) (and .cse0 (or .cse3 (and (bvsle (_ bv0 32) ULTIMATE.start_main_~main__c~0) .cse1 .cse2)) (bvsle (_ bv0 32) (bvadd (_ bv4294967293 32) ULTIMATE.start_main_~main__cp~0)) .cse4 .cse5))))) [2021-10-13 08:08:02,696 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 318) no Hoare annotation was computed. [2021-10-13 08:08:02,696 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 359) no Hoare annotation was computed. [2021-10-13 08:08:02,696 INFO L857 garLoopResultBuilder]: For program point L63(lines 63 422) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L853 garLoopResultBuilder]: At program point L410(lines 104 411) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse1 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32)))) (or (and .cse0 .cse1 (bvsgt ULTIMATE.start_main_~main__urilen~0 (_ bv0 32))) (and .cse0 (or (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__urilen~0) ULTIMATE.start_main_~main__scheme~0) (not (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (= ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) .cse1))) [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 346) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 434) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 328) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 157) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 374) no Hoare annotation was computed. [2021-10-13 08:08:02,697 INFO L857 garLoopResultBuilder]: For program point L296(line 296) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 417) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L857 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 414) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L853 garLoopResultBuilder]: At program point L315(lines 230 344) the Hoare annotation is: (let ((.cse25 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (let ((.cse3 (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32))) (.cse4 (= ULTIMATE.start_main_~main__c~0 (_ bv0 32))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv1 32))) (.cse5 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 (_ bv1 32))) (.cse6 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32))) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv0 32)))) (.cse8 (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32))) (.cse9 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv1 32))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 (_ bv1 32))) (.cse11 (bvslt ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0)) (.cse12 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse13 (let ((.cse26 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32))) (.cse27 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv0 32)))) (.cse28 (or (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__scheme~0) ULTIMATE.start_main_~main__urilen~0) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__urilen~0) ULTIMATE.start_main_~main__scheme~0))) (.cse29 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) (or (and (bvsle (_ bv0 32) (bvadd ULTIMATE.start_main_~main__scheme~0 (_ bv1 32))) .cse26 .cse27 .cse28 .cse29) (and .cse26 .cse27 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 (_ bv0 32))) .cse28 .cse29)))) (.cse14 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~4 (_ bv1 32))) (.cse15 (bvsge .cse25 (_ bv0 32))) (.cse16 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 (_ bv0 32)))) (.cse17 (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (.cse18 (not (= ULTIMATE.start_main_~main__urilen~0 (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv1 32))))) (.cse19 (bvsle .cse25 (_ bv1000000 32))) (.cse20 (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32))) (.cse21 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 (_ bv0 32))))) (let ((.cse1 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32))) (.cse0 (or (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv1 32)) (bvsle (_ bv0 32) (bvadd (_ bv4294967293 32) ULTIMATE.start_main_~main__cp~0)) .cse17 (let ((.cse22 (let ((.cse23 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv0 32)))) (.cse24 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 (_ bv0 32))))) (or (and .cse3 .cse5 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 (_ bv1 32)) .cse6 .cse7 .cse23 .cse8 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse24 .cse19 .cse20 .cse21) (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse23 .cse8 (bvslt ULTIMATE.start_main_~main__c~0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__tokenlen~0)) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse24 .cse19 .cse20 .cse21))))) (or (and (bvsle (_ bv0 32) ULTIMATE.start_main_~main__c~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 (_ bv1 32)) .cse22) (and .cse4 .cse22)))) (and .cse3 .cse4 .cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 (_ bv1 32)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (bvsge (bvadd (_ bv4294967292 32) ULTIMATE.start_main_~main__cp~0) (_ bv0 32)) .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 (_ bv1 32))) (and .cse1 (or (and .cse2 .cse0) (and .cse3 .cse4 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (bvsle (_ bv0 32) (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv4294967294 32))) .cse19 .cse20 .cse21))))))) [2021-10-13 08:08:02,698 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 243) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L857 garLoopResultBuilder]: For program point L282(lines 282 320) no Hoare annotation was computed. [2021-10-13 08:08:02,698 INFO L860 garLoopResultBuilder]: At program point L431(lines 13 439) the Hoare annotation is: true [2021-10-13 08:08:02,699 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 436) no Hoare annotation was computed. [2021-10-13 08:08:02,702 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:08:02,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:08:02 BoogieIcfgContainer [2021-10-13 08:08:02,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:08:02,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:08:02,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:08:02,787 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:08:02,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:03:45" (3/4) ... [2021-10-13 08:08:02,791 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:08:02,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 08:08:02,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:08:02,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:08:02,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:08:02,913 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:08:02,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:08:02,914 INFO L168 Benchmark]: Toolchain (without parser) took 258530.89 ms. Allocated memory was 58.7 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 36.2 MB in the beginning and 867.5 MB in the end (delta: -831.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 16.1 GB. [2021-10-13 08:08:02,915 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:08:02,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.75 ms. Allocated memory is still 58.7 MB. Free memory was 36.0 MB in the beginning and 31.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:02,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.20 ms. Allocated memory is still 58.7 MB. Free memory was 31.6 MB in the beginning and 29.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:02,916 INFO L168 Benchmark]: Boogie Preprocessor took 30.13 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 28.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:08:02,916 INFO L168 Benchmark]: RCFGBuilder took 563.90 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 26.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:02,920 INFO L168 Benchmark]: TraceAbstraction took 257406.86 ms. Allocated memory was 58.7 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 26.4 MB in the beginning and 878.0 MB in the end (delta: -851.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 16.1 GB. [2021-10-13 08:08:02,921 INFO L168 Benchmark]: Witness Printer took 125.98 ms. Allocated memory is still 2.8 GB. Free memory was 878.0 MB in the beginning and 867.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:02,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.75 ms. Allocated memory is still 58.7 MB. Free memory was 36.0 MB in the beginning and 31.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.20 ms. Allocated memory is still 58.7 MB. Free memory was 31.6 MB in the beginning and 29.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.13 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 28.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 563.90 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 26.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 257406.86 ms. Allocated memory was 58.7 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 26.4 MB in the beginning and 878.0 MB in the end (delta: -851.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 16.1 GB. * Witness Printer took 125.98 ms. Allocated memory is still 2.8 GB. Free memory was 878.0 MB in the beginning and 867.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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 - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 97]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 125]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 145]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 157]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 214]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 226]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 243]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 255]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 272]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 284]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 296]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 308]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 374]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 386]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 257244.4ms, OverallIterations: 35, TraceHistogramMax: 12, EmptinessCheckTime: 34.9ms, AutomataDifference: 110150.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 43588.9ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2102 SDtfs, 24146 SDslu, 9847 SDs, 0 SdLazy, 12069 SolverSat, 2345 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23450.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4910 GetRequests, 3851 SyntacticMatches, 10 SemanticMatches, 1049 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36136 ImplicationChecksByTransitivity, 98769.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=32, InterpolantAutomatonStates: 743, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 532.6ms AutomataMinimizationTime, 35 MinimizatonAttempts, 3200 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 308 NumberOfFragments, 2189 HoareAnnotationTreeSize, 6 FomulaSimplifications, 5286350513707793353 FormulaSimplificationTreeSizeReduction, 16071.3ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 17145463197981341 FormulaSimplificationTreeSizeReductionInter, 27505.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 562.5ms SsaConstructionTime, 2581.8ms SatisfiabilityAnalysisTime, 44529.5ms InterpolantComputationTime, 2188 NumberOfCodeBlocks, 2188 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 4256 ConstructedInterpolants, 0 QuantifiedInterpolants, 22595 SizeOfPredicates, 344 NumberOfNonLiveVariables, 5464 ConjunctsInSsa, 651 ConjunctsInUnsatCore, 120 InterpolantComputations, 52 PerfectInterpolantSequences, 901/2946 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 - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 230]: Loop Invariant Derived loop invariant: ((((((__VERIFIER_assert__cond == 1bv32 && ~bvsle32(0bv32, ~bvadd64(4294967293bv32, main__cp))) && ~bvsge32(main__scheme, 0bv32)) && (((~bvsle32(0bv32, main__c) && __VERIFIER_assert__cond == 1bv32) && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) || (main__c == 0bv32 && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))))) || (((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967292bv32, main__cp), 0bv32)) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && !(main__urilen == ~bvadd64(main__cp, 1bv32))) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32))) && ~bvsle32(main__urilen, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) || (~bvsle32(main__urilen, 1000000bv32) && ((__VERIFIER_assert__cond == 1bv32 && ((((__VERIFIER_assert__cond == 1bv32 && ~bvsle32(0bv32, ~bvadd64(4294967293bv32, main__cp))) && ~bvsge32(main__scheme, 0bv32)) && (((~bvsle32(0bv32, main__c) && __VERIFIER_assert__cond == 1bv32) && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) || (main__c == 0bv32 && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))))) || (((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967292bv32, main__cp), 0bv32)) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && !(main__urilen == ~bvadd64(main__cp, 1bv32))) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) || ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && !(main__urilen == ~bvadd64(main__cp, 1bv32))) && ~bvsle32(0bv32, ~bvadd64(main__cp, 4294967294bv32))) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: ((((((__VERIFIER_assert__cond == 1bv32 && __VERIFIER_assert__cond == 1bv32) && (((__VERIFIER_assert__cond == 1bv32 && main__c == 1bv32) && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))) || (main__c == 0bv32 && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))))) && __VERIFIER_assert__cond == 1bv32) && ~bvsle32(0bv32, ~bvadd64(main__cp, 4294967294bv32))) && ~bvsle32(main__urilen, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && ((main__c == 0bv32 && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))) || ((~bvsle32(0bv32, main__c) && __VERIFIER_assert__cond == 1bv32) && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))))) && ~bvsle32(0bv32, ~bvadd64(4294967293bv32, main__cp))) && ~bvsle32(main__urilen, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((__VERIFIER_assert__cond == 1bv32 && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsgt32(main__urilen, 0bv32)) || ((__VERIFIER_assert__cond == 1bv32 && ((~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme) || !~bvsge32(main__scheme, 0bv32)) || main__scheme == 0bv32)) && ~bvsle32(main__urilen, 1000000bv32)) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: (((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && !(main__scheme == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(0bv32, ~bvadd64(4294967295bv32, main__cp))) && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && ~bvslt32(~bvadd64(4294967295bv32, main__cp), main__urilen)) && __VERIFIER_assert__cond == 1bv32 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && !(main__scheme == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(0bv32, ~bvadd64(4294967295bv32, main__cp))) && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && ~bvsgt32(main__urilen, 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, main__cp), main__urilen)) && __VERIFIER_assert__cond == 1bv32) || (((((((((__VERIFIER_assert__cond == 1bv32 && __VERIFIER_assert__cond == 1bv32) && main__urilen == ~bvadd64(main__cp, 1bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && !(main__scheme == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsgt32(main__urilen, 0bv32)) && __VERIFIER_assert__cond == 1bv32) RESULT: Ultimate proved your program to be correct! [2021-10-13 08:08:03,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d46f632-fe2a-485b-bb45-76eb02ab83b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...