./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs --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 862f0f322d7c15c3a2228e5e9f126525b7d1ec99 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs --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 862f0f322d7c15c3a2228e5e9f126525b7d1ec99 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:30:16,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:30:16,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:30:16,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:30:16,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:30:16,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:30:16,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:30:16,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:30:16,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:30:16,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:30:16,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:30:16,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:30:16,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:30:16,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:30:16,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:30:16,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:30:16,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:30:16,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:30:16,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:30:16,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:30:16,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:30:16,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:30:16,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:30:16,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:30:16,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:30:16,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:30:16,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:30:16,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:30:16,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:30:16,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:30:16,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:30:16,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:30:16,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:30:16,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:30:16,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:30:16,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:30:16,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:30:16,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:30:16,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:30:16,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:30:16,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:30:16,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:30:16,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:30:16,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:30:16,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:30:16,304 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:30:16,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:30:16,304 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:30:16,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:30:16,305 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:30:16,305 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:30:16,305 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:30:16,306 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:30:16,306 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:30:16,306 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:30:16,307 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:30:16,307 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:30:16,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:30:16,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:30:16,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:30:16,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:30:16,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:30:16,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:30:16,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:30:16,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:30:16,310 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:30:16,310 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:30:16,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:30:16,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:30:16,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:30:16,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:30:16,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:30:16,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:16,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:30:16,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:30:16,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:30:16,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:30:16,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:30:16,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:30:16,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:30:16,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:30:16,315 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_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 862f0f322d7c15c3a2228e5e9f126525b7d1ec99 [2021-10-16 02:30:16,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:30:16,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:30:16,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:30:16,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:30:16,724 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:30:16,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-16 02:30:16,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/1674f62cd/411083f5a1b4451e9c8294a79e17440f/FLAG82bfa1918 [2021-10-16 02:30:17,464 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:30:17,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-16 02:30:17,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/1674f62cd/411083f5a1b4451e9c8294a79e17440f/FLAG82bfa1918 [2021-10-16 02:30:17,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/1674f62cd/411083f5a1b4451e9c8294a79e17440f [2021-10-16 02:30:17,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:30:17,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:30:17,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:17,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:30:17,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:30:17,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:17" (1/1) ... [2021-10-16 02:30:17,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d6ee3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:17, skipping insertion in model container [2021-10-16 02:30:17,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:17" (1/1) ... [2021-10-16 02:30:17,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:30:17,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:30:18,252 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_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42850,42863] [2021-10-16 02:30:18,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:18,272 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:30:18,337 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_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42850,42863] [2021-10-16 02:30:18,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:18,371 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:30:18,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18 WrapperNode [2021-10-16 02:30:18,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:18,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:18,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:30:18,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:30:18,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:18,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:30:18,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:30:18,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:30:18,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:30:18,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:30:18,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:30:18,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:30:18,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (1/1) ... [2021-10-16 02:30:18,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:18,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:18,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:30:18,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:30:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:30:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:30:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:30:18,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:30:18,842 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:30:19,512 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:30:19,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:30:20,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:30:20,026 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:30:20,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:20 BoogieIcfgContainer [2021-10-16 02:30:20,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:30:20,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:30:20,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:30:20,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:30:20,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:30:17" (1/3) ... [2021-10-16 02:30:20,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d383545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:20, skipping insertion in model container [2021-10-16 02:30:20,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:18" (2/3) ... [2021-10-16 02:30:20,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d383545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:20, skipping insertion in model container [2021-10-16 02:30:20,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:20" (3/3) ... [2021-10-16 02:30:20,038 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-1.c [2021-10-16 02:30:20,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:30:20,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:30:20,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:30:20,102 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 [2021-10-16 02:30:20,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:30:20,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:30:20,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:20,138 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] [2021-10-16 02:30:20,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2003122264, now seen corresponding path program 1 times [2021-10-16 02:30:20,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:20,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919736354] [2021-10-16 02:30:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:20,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:20,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:20,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919736354] [2021-10-16 02:30:20,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919736354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:20,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:20,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:30:20,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370660000] [2021-10-16 02:30:20,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:20,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:20,522 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 0 states have call successors, (0), 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 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:20,773 INFO L93 Difference]: Finished difference Result 231 states and 400 transitions. [2021-10-16 02:30:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:20,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-10-16 02:30:20,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:20,794 INFO L225 Difference]: With dead ends: 231 [2021-10-16 02:30:20,795 INFO L226 Difference]: Without dead ends: 121 [2021-10-16 02:30:20,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-16 02:30:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-10-16 02:30:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2021-10-16 02:30:20,873 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 39 [2021-10-16 02:30:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:20,874 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2021-10-16 02:30:20,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2021-10-16 02:30:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-16 02:30:20,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:20,880 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:20,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:30:20,881 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:20,884 INFO L82 PathProgramCache]: Analyzing trace with hash 484934755, now seen corresponding path program 1 times [2021-10-16 02:30:20,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:20,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111459797] [2021-10-16 02:30:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:20,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:21,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:21,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111459797] [2021-10-16 02:30:21,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111459797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:21,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:21,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:21,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392728435] [2021-10-16 02:30:21,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:21,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:21,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:21,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:21,024 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2021-10-16 02:30:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:21,233 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2021-10-16 02:30:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 53 [2021-10-16 02:30:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:21,241 INFO L225 Difference]: With dead ends: 257 [2021-10-16 02:30:21,241 INFO L226 Difference]: Without dead ends: 140 [2021-10-16 02:30:21,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-16 02:30:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-10-16 02:30:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2021-10-16 02:30:21,269 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 53 [2021-10-16 02:30:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:21,270 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2021-10-16 02:30:21,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2021-10-16 02:30:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2021-10-16 02:30:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-16 02:30:21,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:21,278 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:21,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:30:21,280 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:21,284 INFO L82 PathProgramCache]: Analyzing trace with hash 23666397, now seen corresponding path program 1 times [2021-10-16 02:30:21,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:21,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492500650] [2021-10-16 02:30:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:21,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:30:21,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:21,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492500650] [2021-10-16 02:30:21,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492500650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:21,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:21,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:30:21,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839025756] [2021-10-16 02:30:21,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:21,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:21,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:21,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:21,494 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:21,746 INFO L93 Difference]: Finished difference Result 319 states and 470 transitions. [2021-10-16 02:30:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:21,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-16 02:30:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:21,750 INFO L225 Difference]: With dead ends: 319 [2021-10-16 02:30:21,751 INFO L226 Difference]: Without dead ends: 183 [2021-10-16 02:30:21,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-16 02:30:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2021-10-16 02:30:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.36) internal successors, (238), 175 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2021-10-16 02:30:21,788 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 70 [2021-10-16 02:30:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:21,788 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2021-10-16 02:30:21,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2021-10-16 02:30:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-16 02:30:21,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:21,792 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-16 02:30:21,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:30:21,795 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:21,797 INFO L82 PathProgramCache]: Analyzing trace with hash 551533015, now seen corresponding path program 1 times [2021-10-16 02:30:21,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:21,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452057656] [2021-10-16 02:30:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:21,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:30:21,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:21,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452057656] [2021-10-16 02:30:21,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452057656] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:21,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:21,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:21,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684526344] [2021-10-16 02:30:21,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:21,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:21,956 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:22,154 INFO L93 Difference]: Finished difference Result 383 states and 532 transitions. [2021-10-16 02:30:22,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-16 02:30:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:22,157 INFO L225 Difference]: With dead ends: 383 [2021-10-16 02:30:22,158 INFO L226 Difference]: Without dead ends: 209 [2021-10-16 02:30:22,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-16 02:30:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2021-10-16 02:30:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3333333333333333) internal successors, (264), 198 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2021-10-16 02:30:22,172 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 90 [2021-10-16 02:30:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:22,173 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2021-10-16 02:30:22,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2021-10-16 02:30:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-16 02:30:22,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:22,177 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:22,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:30:22,178 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1236480025, now seen corresponding path program 1 times [2021-10-16 02:30:22,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:22,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365124840] [2021-10-16 02:30:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:22,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:22,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:22,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365124840] [2021-10-16 02:30:22,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365124840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:30:22,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116187079] [2021-10-16 02:30:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:22,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:22,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:30:22,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:30:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:22,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:30:22,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:22,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-16 02:30:23,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116187079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:23,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1560409632] [2021-10-16 02:30:23,598 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-10-16 02:30:23,598 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:30:23,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:30:23,611 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:30:23,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:30:23,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:23,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:30:23,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:23,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:30:23,853 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:30:23,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:23,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:30:23,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-16 02:30:23,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:23,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:23,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:24,097 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:30:24,098 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 [2021-10-16 02:30:24,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:24,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:30:24,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:24,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:30:24,120 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:30:24,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:24,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:24,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:24,254 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:30:24,255 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 [2021-10-16 02:30:24,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:24,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:30:24,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:24,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:30:24,269 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:30:24,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:24,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:24,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:30:24,375 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:30:24,381 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 [2021-10-16 02:30:24,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:24,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:30:24,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:24,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:30:24,389 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:30:24,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:24,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:30:24,754 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-16 02:30:24,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1071 [2021-10-16 02:30:24,809 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 02:30:24,810 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1071 [2021-10-16 02:30:24,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:25,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:25,036 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_21| 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) [2021-10-16 02:30:25,041 INFO L168 Benchmark]: Toolchain (without parser) took 7304.25 ms. Allocated memory was 119.5 MB in the beginning and 167.8 MB in the end (delta: 48.2 MB). Free memory was 78.9 MB in the beginning and 123.4 MB in the end (delta: -44.5 MB). Peak memory consumption was 76.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:25,041 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.9 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:30:25,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.72 ms. Allocated memory is still 119.5 MB. Free memory was 78.7 MB in the beginning and 90.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:25,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.35 ms. Allocated memory is still 119.5 MB. Free memory was 90.2 MB in the beginning and 87.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:25,043 INFO L168 Benchmark]: Boogie Preprocessor took 47.17 ms. Allocated memory is still 119.5 MB. Free memory was 87.3 MB in the beginning and 85.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:25,043 INFO L168 Benchmark]: RCFGBuilder took 1502.58 ms. Allocated memory is still 119.5 MB. Free memory was 85.2 MB in the beginning and 84.7 MB in the end (delta: 483.5 kB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:25,044 INFO L168 Benchmark]: TraceAbstraction took 5008.74 ms. Allocated memory was 119.5 MB in the beginning and 167.8 MB in the end (delta: 48.2 MB). Free memory was 84.7 MB in the beginning and 123.4 MB in the end (delta: -38.7 MB). Peak memory consumption was 85.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:25,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.9 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 632.72 ms. Allocated memory is still 119.5 MB. Free memory was 78.7 MB in the beginning and 90.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.35 ms. Allocated memory is still 119.5 MB. Free memory was 90.2 MB in the beginning and 87.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.17 ms. Allocated memory is still 119.5 MB. Free memory was 87.3 MB in the beginning and 85.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1502.58 ms. Allocated memory is still 119.5 MB. Free memory was 85.2 MB in the beginning and 84.7 MB in the end (delta: 483.5 kB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5008.74 ms. Allocated memory was 119.5 MB in the beginning and 167.8 MB in the end (delta: 48.2 MB). Free memory was 84.7 MB in the beginning and 123.4 MB in the end (delta: -38.7 MB). Peak memory consumption was 85.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_21| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_21|: 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. [2021-10-16 02:30:25,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:30:28,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:30:28,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:30:28,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:30:28,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:30:28,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:30:28,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:30:28,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:30:28,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:30:28,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:30:28,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:30:28,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:30:28,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:30:28,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:30:28,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:30:28,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:30:28,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:30:28,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:30:28,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:30:28,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:30:28,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:30:28,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:30:28,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:30:28,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:30:28,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:30:28,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:30:28,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:30:28,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:30:28,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:30:28,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:30:28,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:30:28,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:30:28,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:30:28,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:30:28,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:30:28,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:30:28,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:30:28,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:30:28,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:30:28,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:30:28,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:30:28,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:30:28,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:30:28,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:30:28,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:30:28,186 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:30:28,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:30:28,186 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:30:28,187 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:30:28,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:30:28,187 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:30:28,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:30:28,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:30:28,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:30:28,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:30:28,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:30:28,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:30:28,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:30:28,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:30:28,192 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:30:28,192 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:30:28,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:30:28,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:30:28,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:30:28,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:30:28,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:30:28,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:30:28,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:30:28,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:28,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:30:28,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:30:28,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:30:28,195 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:30:28,195 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:28,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:30:28,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:30:28,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:30:28,197 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_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 862f0f322d7c15c3a2228e5e9f126525b7d1ec99 [2021-10-16 02:30:28,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:30:28,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:30:28,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:30:28,640 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:30:28,641 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:30:28,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-16 02:30:28,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/f092802ce/6f687151239b4853b1da72e950cf4370/FLAGf78057bcd [2021-10-16 02:30:29,399 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:30:29,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c [2021-10-16 02:30:29,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/f092802ce/6f687151239b4853b1da72e950cf4370/FLAGf78057bcd [2021-10-16 02:30:29,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/data/f092802ce/6f687151239b4853b1da72e950cf4370 [2021-10-16 02:30:29,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:30:29,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:30:29,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:29,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:30:29,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:30:29,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:29" (1/1) ... [2021-10-16 02:30:29,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219acd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:29, skipping insertion in model container [2021-10-16 02:30:29,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:29" (1/1) ... [2021-10-16 02:30:29,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:30:29,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:30:29,994 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_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42850,42863] [2021-10-16 02:30:30,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:30,033 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:30:30,142 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_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-1.c[42850,42863] [2021-10-16 02:30:30,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:30,167 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:30:30,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30 WrapperNode [2021-10-16 02:30:30,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:30,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:30,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:30:30,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:30:30,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:30,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:30:30,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:30:30,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:30:30,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:30:30,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:30:30,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:30:30,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:30:30,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (1/1) ... [2021-10-16 02:30:30,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:30,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:30,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:30:30,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:30:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:30:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:30:30,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:30:30,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:30:30,644 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:30:31,042 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:30:31,042 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:30:31,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:30:31,051 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:30:31,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:31 BoogieIcfgContainer [2021-10-16 02:30:31,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:30:31,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:30:31,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:30:31,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:30:31,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:30:29" (1/3) ... [2021-10-16 02:30:31,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f297b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:31, skipping insertion in model container [2021-10-16 02:30:31,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:30" (2/3) ... [2021-10-16 02:30:31,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f297b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:31, skipping insertion in model container [2021-10-16 02:30:31,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:31" (3/3) ... [2021-10-16 02:30:31,062 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-1.c [2021-10-16 02:30:31,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:30:31,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:30:31,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:30:31,136 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 [2021-10-16 02:30:31,136 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:30:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 02:30:31,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:31,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:31,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:31,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1632005994, now seen corresponding path program 1 times [2021-10-16 02:30:31,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:31,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140562401] [2021-10-16 02:30:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:31,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:31,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:31,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:31,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:30:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:31,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:30:31,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:31,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:31,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:31,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140562401] [2021-10-16 02:30:31,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140562401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:31,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:31,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:30:31,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603583864] [2021-10-16 02:30:31,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:31,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:31,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:31,905 INFO L87 Difference]: Start difference. First operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:32,168 INFO L93 Difference]: Finished difference Result 302 states and 514 transitions. [2021-10-16 02:30:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:32,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-16 02:30:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:32,181 INFO L225 Difference]: With dead ends: 302 [2021-10-16 02:30:32,182 INFO L226 Difference]: Without dead ends: 149 [2021-10-16 02:30:32,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-16 02:30:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-10-16 02:30:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 145 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2021-10-16 02:30:32,233 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 44 [2021-10-16 02:30:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:32,234 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2021-10-16 02:30:32,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2021-10-16 02:30:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 02:30:32,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:32,238 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:32,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:32,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:32,441 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1928463050, now seen corresponding path program 1 times [2021-10-16 02:30:32,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:32,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438860491] [2021-10-16 02:30:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:32,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:32,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:32,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:32,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:30:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:32,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:32,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:32,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:32,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:32,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438860491] [2021-10-16 02:30:32,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438860491] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:32,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:32,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:30:32,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237659690] [2021-10-16 02:30:32,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:32,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:32,984 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:33,168 INFO L93 Difference]: Finished difference Result 310 states and 472 transitions. [2021-10-16 02:30:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-16 02:30:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:33,172 INFO L225 Difference]: With dead ends: 310 [2021-10-16 02:30:33,172 INFO L226 Difference]: Without dead ends: 172 [2021-10-16 02:30:33,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-16 02:30:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 167. [2021-10-16 02:30:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2021-10-16 02:30:33,192 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 60 [2021-10-16 02:30:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:33,193 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2021-10-16 02:30:33,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2021-10-16 02:30:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:30:33,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:33,197 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:33,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:33,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:33,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:33,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1665246877, now seen corresponding path program 1 times [2021-10-16 02:30:33,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:33,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791123343] [2021-10-16 02:30:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:33,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:33,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:33,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:33,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:30:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:33,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:33,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:30:33,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:30:34,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:34,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791123343] [2021-10-16 02:30:34,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791123343] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:34,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:34,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:30:34,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115822915] [2021-10-16 02:30:34,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:34,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:34,132 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:34,372 INFO L93 Difference]: Finished difference Result 372 states and 561 transitions. [2021-10-16 02:30:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 02:30:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:34,377 INFO L225 Difference]: With dead ends: 372 [2021-10-16 02:30:34,377 INFO L226 Difference]: Without dead ends: 213 [2021-10-16 02:30:34,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-16 02:30:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2021-10-16 02:30:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4038461538461537) internal successors, (292), 208 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2021-10-16 02:30:34,419 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 81 [2021-10-16 02:30:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:34,420 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2021-10-16 02:30:34,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2021-10-16 02:30:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:30:34,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:34,433 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:34,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:34,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:34,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:34,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1913393371, now seen corresponding path program 1 times [2021-10-16 02:30:34,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:34,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848892671] [2021-10-16 02:30:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:34,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:34,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:34,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:34,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:30:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:34,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:34,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:30:35,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:30:35,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:35,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848892671] [2021-10-16 02:30:35,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848892671] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:35,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:35,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:30:35,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676932754] [2021-10-16 02:30:35,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:35,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:35,276 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:35,429 INFO L93 Difference]: Finished difference Result 437 states and 619 transitions. [2021-10-16 02:30:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 02:30:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:35,433 INFO L225 Difference]: With dead ends: 437 [2021-10-16 02:30:35,433 INFO L226 Difference]: Without dead ends: 236 [2021-10-16 02:30:35,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-16 02:30:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2021-10-16 02:30:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3852813852813852) internal successors, (320), 231 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 320 transitions. [2021-10-16 02:30:35,451 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 320 transitions. Word has length 81 [2021-10-16 02:30:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:35,452 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 320 transitions. [2021-10-16 02:30:35,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 320 transitions. [2021-10-16 02:30:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-16 02:30:35,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:35,474 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:35,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:35,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:35,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1927243720, now seen corresponding path program 1 times [2021-10-16 02:30:35,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:35,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785978211] [2021-10-16 02:30:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:35,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:35,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:35,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:35,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:30:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:35,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:35,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:30:36,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:30:36,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:36,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785978211] [2021-10-16 02:30:36,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785978211] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:36,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:36,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:30:36,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316064708] [2021-10-16 02:30:36,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:36,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:36,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:36,327 INFO L87 Difference]: Start difference. First operand 232 states and 320 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-10-16 02:30:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:36,476 INFO L93 Difference]: Finished difference Result 494 states and 695 transitions. [2021-10-16 02:30:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:36,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-16 02:30:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:36,490 INFO L225 Difference]: With dead ends: 494 [2021-10-16 02:30:36,491 INFO L226 Difference]: Without dead ends: 270 [2021-10-16 02:30:36,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-16 02:30:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 257. [2021-10-16 02:30:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.3671875) internal successors, (350), 256 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 350 transitions. [2021-10-16 02:30:36,515 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 350 transitions. Word has length 102 [2021-10-16 02:30:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:36,515 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 350 transitions. [2021-10-16 02:30:36,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-10-16 02:30:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 350 transitions. [2021-10-16 02:30:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-16 02:30:36,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:36,520 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:36,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:36,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:36,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:36,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:36,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1383340250, now seen corresponding path program 1 times [2021-10-16 02:30:36,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:36,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728564991] [2021-10-16 02:30:36,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:36,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:36,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:36,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:36,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:30:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:36,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:36,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:30:37,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:30:37,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:37,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728564991] [2021-10-16 02:30:37,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728564991] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:37,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:37,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:30:37,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475624046] [2021-10-16 02:30:37,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:37,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:37,614 INFO L87 Difference]: Start difference. First operand 257 states and 350 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2021-10-16 02:30:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:37,687 INFO L93 Difference]: Finished difference Result 970 states and 1325 transitions. [2021-10-16 02:30:37,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:37,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) Word has length 121 [2021-10-16 02:30:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:37,695 INFO L225 Difference]: With dead ends: 970 [2021-10-16 02:30:37,695 INFO L226 Difference]: Without dead ends: 721 [2021-10-16 02:30:37,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-10-16 02:30:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2021-10-16 02:30:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.3625) internal successors, (981), 720 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 981 transitions. [2021-10-16 02:30:37,731 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 981 transitions. Word has length 121 [2021-10-16 02:30:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:37,732 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 981 transitions. [2021-10-16 02:30:37,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2021-10-16 02:30:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 981 transitions. [2021-10-16 02:30:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 02:30:37,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:37,736 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:37,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:37,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:37,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:37,950 INFO L82 PathProgramCache]: Analyzing trace with hash 56372730, now seen corresponding path program 1 times [2021-10-16 02:30:37,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:37,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784394538] [2021-10-16 02:30:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:37,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:37,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:37,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:37,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:30:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:38,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:38,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:30:38,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:30:38,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:38,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784394538] [2021-10-16 02:30:38,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784394538] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:38,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:38,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:30:38,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430499478] [2021-10-16 02:30:38,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:38,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:38,860 INFO L87 Difference]: Start difference. First operand 721 states and 981 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:38,908 INFO L93 Difference]: Finished difference Result 1458 states and 1980 transitions. [2021-10-16 02:30:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 122 [2021-10-16 02:30:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:38,917 INFO L225 Difference]: With dead ends: 1458 [2021-10-16 02:30:38,917 INFO L226 Difference]: Without dead ends: 745 [2021-10-16 02:30:38,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-10-16 02:30:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-10-16 02:30:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 1.35752688172043) internal successors, (1010), 744 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1010 transitions. [2021-10-16 02:30:38,950 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1010 transitions. Word has length 122 [2021-10-16 02:30:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:38,951 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1010 transitions. [2021-10-16 02:30:38,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1010 transitions. [2021-10-16 02:30:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 02:30:38,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:38,955 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:38,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:39,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:39,169 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:39,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1445666744, now seen corresponding path program 1 times [2021-10-16 02:30:39,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:39,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193664750] [2021-10-16 02:30:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:39,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:39,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:39,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:39,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:30:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:39,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:39,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 02:30:39,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 02:30:40,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:40,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193664750] [2021-10-16 02:30:40,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193664750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:40,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:40,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:30:40,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537866217] [2021-10-16 02:30:40,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:40,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:40,146 INFO L87 Difference]: Start difference. First operand 745 states and 1010 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2021-10-16 02:30:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:40,180 INFO L93 Difference]: Finished difference Result 1495 states and 2022 transitions. [2021-10-16 02:30:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:40,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 122 [2021-10-16 02:30:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:40,186 INFO L225 Difference]: With dead ends: 1495 [2021-10-16 02:30:40,186 INFO L226 Difference]: Without dead ends: 758 [2021-10-16 02:30:40,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-10-16 02:30:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2021-10-16 02:30:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 1.3513870541611626) internal successors, (1023), 757 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1023 transitions. [2021-10-16 02:30:40,219 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1023 transitions. Word has length 122 [2021-10-16 02:30:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:40,221 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 1023 transitions. [2021-10-16 02:30:40,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2021-10-16 02:30:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1023 transitions. [2021-10-16 02:30:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-10-16 02:30:40,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:40,227 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:40,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:40,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:40,444 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:40,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1504970762, now seen corresponding path program 1 times [2021-10-16 02:30:40,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:40,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879712037] [2021-10-16 02:30:40,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:40,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:40,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:40,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:40,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:30:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:40,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:40,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-10-16 02:30:41,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-10-16 02:30:41,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:41,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879712037] [2021-10-16 02:30:41,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879712037] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:41,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:41,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:30:41,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970693950] [2021-10-16 02:30:41,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:41,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:41,927 INFO L87 Difference]: Start difference. First operand 758 states and 1023 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:42,250 INFO L93 Difference]: Finished difference Result 1707 states and 2404 transitions. [2021-10-16 02:30:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:42,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 183 [2021-10-16 02:30:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:42,258 INFO L225 Difference]: With dead ends: 1707 [2021-10-16 02:30:42,259 INFO L226 Difference]: Without dead ends: 970 [2021-10-16 02:30:42,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-10-16 02:30:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 947. [2021-10-16 02:30:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.3477801268498943) internal successors, (1275), 946 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1275 transitions. [2021-10-16 02:30:42,314 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1275 transitions. Word has length 183 [2021-10-16 02:30:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:42,315 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1275 transitions. [2021-10-16 02:30:42,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1275 transitions. [2021-10-16 02:30:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-16 02:30:42,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:42,320 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:42,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:42,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:42,535 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1964363198, now seen corresponding path program 1 times [2021-10-16 02:30:42,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:42,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991228145] [2021-10-16 02:30:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:42,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:42,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:42,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:30:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:43,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:43,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-16 02:30:43,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-16 02:30:44,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:44,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991228145] [2021-10-16 02:30:44,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991228145] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:44,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:44,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:30:44,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897662407] [2021-10-16 02:30:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:44,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:44,037 INFO L87 Difference]: Start difference. First operand 947 states and 1275 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:44,363 INFO L93 Difference]: Finished difference Result 1994 states and 2736 transitions. [2021-10-16 02:30:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 191 [2021-10-16 02:30:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:44,372 INFO L225 Difference]: With dead ends: 1994 [2021-10-16 02:30:44,373 INFO L226 Difference]: Without dead ends: 1068 [2021-10-16 02:30:44,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-16 02:30:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1031. [2021-10-16 02:30:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 1.3339805825242719) internal successors, (1374), 1030 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1374 transitions. [2021-10-16 02:30:44,430 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1374 transitions. Word has length 191 [2021-10-16 02:30:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:44,431 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1374 transitions. [2021-10-16 02:30:44,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1374 transitions. [2021-10-16 02:30:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-10-16 02:30:44,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:44,437 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:44,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:44,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:44,654 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:44,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1277298294, now seen corresponding path program 1 times [2021-10-16 02:30:44,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:44,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738640827] [2021-10-16 02:30:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:44,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:44,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:44,657 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:44,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:30:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:45,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-16 02:30:46,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-16 02:30:46,528 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:46,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738640827] [2021-10-16 02:30:46,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738640827] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:46,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:46,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:30:46,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723760769] [2021-10-16 02:30:46,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:46,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:46,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:46,531 INFO L87 Difference]: Start difference. First operand 1031 states and 1374 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:46,815 INFO L93 Difference]: Finished difference Result 2144 states and 2897 transitions. [2021-10-16 02:30:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:46,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 229 [2021-10-16 02:30:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:46,825 INFO L225 Difference]: With dead ends: 2144 [2021-10-16 02:30:46,825 INFO L226 Difference]: Without dead ends: 1134 [2021-10-16 02:30:46,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-10-16 02:30:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1118. [2021-10-16 02:30:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 1.3187108325872874) internal successors, (1473), 1117 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1473 transitions. [2021-10-16 02:30:46,872 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1473 transitions. Word has length 229 [2021-10-16 02:30:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:46,872 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1473 transitions. [2021-10-16 02:30:46,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1473 transitions. [2021-10-16 02:30:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-16 02:30:46,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:46,878 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:46,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:47,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:47,092 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1247038610, now seen corresponding path program 1 times [2021-10-16 02:30:47,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:47,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597248934] [2021-10-16 02:30:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:47,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:47,095 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:47,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:30:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:47,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:30:47,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-10-16 02:30:48,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-10-16 02:30:49,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:49,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597248934] [2021-10-16 02:30:49,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597248934] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:49,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:49,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 02:30:49,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816158526] [2021-10-16 02:30:49,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:30:49,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:30:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:30:49,202 INFO L87 Difference]: Start difference. First operand 1118 states and 1473 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:49,475 INFO L93 Difference]: Finished difference Result 7066 states and 9285 transitions. [2021-10-16 02:30:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:30:49,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 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 235 [2021-10-16 02:30:49,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:49,542 INFO L225 Difference]: With dead ends: 7066 [2021-10-16 02:30:49,543 INFO L226 Difference]: Without dead ends: 5969 [2021-10-16 02:30:49,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:30:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2021-10-16 02:30:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 2210. [2021-10-16 02:30:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2209 states have (on average 1.3177908555907651) internal successors, (2911), 2209 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2911 transitions. [2021-10-16 02:30:49,737 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2911 transitions. Word has length 235 [2021-10-16 02:30:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:49,738 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 2911 transitions. [2021-10-16 02:30:49,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2911 transitions. [2021-10-16 02:30:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-10-16 02:30:49,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:49,748 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:49,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:49,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:49,965 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1618066175, now seen corresponding path program 1 times [2021-10-16 02:30:49,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:49,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906358296] [2021-10-16 02:30:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:49,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:49,968 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:50,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:30:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:50,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:50,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-16 02:30:51,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-16 02:30:52,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:52,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906358296] [2021-10-16 02:30:52,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906358296] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:52,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:52,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:30:52,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865275529] [2021-10-16 02:30:52,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:52,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:52,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:52,129 INFO L87 Difference]: Start difference. First operand 2210 states and 2911 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:52,500 INFO L93 Difference]: Finished difference Result 4605 states and 6151 transitions. [2021-10-16 02:30:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 236 [2021-10-16 02:30:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:52,517 INFO L225 Difference]: With dead ends: 4605 [2021-10-16 02:30:52,517 INFO L226 Difference]: Without dead ends: 2416 [2021-10-16 02:30:52,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-10-16 02:30:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2396. [2021-10-16 02:30:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2395 states have (on average 1.3031315240083508) internal successors, (3121), 2395 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3121 transitions. [2021-10-16 02:30:52,649 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3121 transitions. Word has length 236 [2021-10-16 02:30:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:52,649 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 3121 transitions. [2021-10-16 02:30:52,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3121 transitions. [2021-10-16 02:30:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-10-16 02:30:52,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:52,658 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:52,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:52,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:52,874 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1147030576, now seen corresponding path program 1 times [2021-10-16 02:30:52,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:52,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103629589] [2021-10-16 02:30:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:52,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:52,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:52,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:52,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:30:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:30:53,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 425 proven. 16 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-10-16 02:30:54,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 425 proven. 16 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-10-16 02:30:54,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:54,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103629589] [2021-10-16 02:30:54,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103629589] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:54,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1158368626] [2021-10-16 02:30:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:54,989 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:54,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:30:54,992 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:30:54,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-16 02:30:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:56,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:30:56,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:30:57,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:30:57,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1158368626] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:57,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:30:57,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 7 [2021-10-16 02:30:57,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151318959] [2021-10-16 02:30:57,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:57,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:57,993 INFO L87 Difference]: Start difference. First operand 2396 states and 3121 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:58,141 INFO L93 Difference]: Finished difference Result 6399 states and 8328 transitions. [2021-10-16 02:30:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:58,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 247 [2021-10-16 02:30:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:58,168 INFO L225 Difference]: With dead ends: 6399 [2021-10-16 02:30:58,168 INFO L226 Difference]: Without dead ends: 4024 [2021-10-16 02:30:58,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-10-16 02:30:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4022. [2021-10-16 02:30:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4022 states, 4021 states have (on average 1.297438448147227) internal successors, (5217), 4021 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 5217 transitions. [2021-10-16 02:30:58,380 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 5217 transitions. Word has length 247 [2021-10-16 02:30:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:58,381 INFO L470 AbstractCegarLoop]: Abstraction has 4022 states and 5217 transitions. [2021-10-16 02:30:58,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 5217 transitions. [2021-10-16 02:30:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-10-16 02:30:58,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:58,404 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:58,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:58,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:58,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:58,830 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:58,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1153610059, now seen corresponding path program 1 times [2021-10-16 02:30:58,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:58,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195410213] [2021-10-16 02:30:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:58,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:58,834 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:58,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:30:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:59,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:30:59,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-16 02:31:00,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-16 02:31:01,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:01,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195410213] [2021-10-16 02:31:01,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195410213] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:01,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1436539507] [2021-10-16 02:31:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:01,007 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:31:01,008 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:31:01,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 02:31:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:02,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:02,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-16 02:31:03,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-16 02:31:03,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1436539507] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:03,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816092547] [2021-10-16 02:31:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:03,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:31:03,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:03,983 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:31:03,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 02:31:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:05,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:05,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-16 02:31:06,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-16 02:31:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816092547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:06,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:31:06,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:31:06,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067704837] [2021-10-16 02:31:06,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:31:06,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:31:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:06,641 INFO L87 Difference]: Start difference. First operand 4022 states and 5217 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:07,693 INFO L93 Difference]: Finished difference Result 11574 states and 15146 transitions. [2021-10-16 02:31:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:31:07,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 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 253 [2021-10-16 02:31:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:07,765 INFO L225 Difference]: With dead ends: 11574 [2021-10-16 02:31:07,766 INFO L226 Difference]: Without dead ends: 7573 [2021-10-16 02:31:07,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1520 GetRequests, 1512 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:31:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7573 states. [2021-10-16 02:31:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7573 to 4938. [2021-10-16 02:31:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 1.288434271824995) internal successors, (6361), 4937 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 6361 transitions. [2021-10-16 02:31:08,070 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 6361 transitions. Word has length 253 [2021-10-16 02:31:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:08,071 INFO L470 AbstractCegarLoop]: Abstraction has 4938 states and 6361 transitions. [2021-10-16 02:31:08,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 6361 transitions. [2021-10-16 02:31:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-10-16 02:31:08,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:08,087 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:08,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:08,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:08,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:08,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:08,701 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2136379984, now seen corresponding path program 1 times [2021-10-16 02:31:08,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:08,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127050297] [2021-10-16 02:31:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:08,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:08,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:08,704 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:08,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:31:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:10,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:10,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-10-16 02:31:10,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-10-16 02:31:11,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:11,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127050297] [2021-10-16 02:31:11,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127050297] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:11,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:11,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:31:11,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010618438] [2021-10-16 02:31:11,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:11,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:11,156 INFO L87 Difference]: Start difference. First operand 4938 states and 6361 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 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) [2021-10-16 02:31:11,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:11,593 INFO L93 Difference]: Finished difference Result 8335 states and 10897 transitions. [2021-10-16 02:31:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 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) Word has length 308 [2021-10-16 02:31:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:11,601 INFO L225 Difference]: With dead ends: 8335 [2021-10-16 02:31:11,601 INFO L226 Difference]: Without dead ends: 3066 [2021-10-16 02:31:11,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-10-16 02:31:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2964. [2021-10-16 02:31:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2963 states have (on average 1.2807964900438744) internal successors, (3795), 2963 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3795 transitions. [2021-10-16 02:31:11,723 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3795 transitions. Word has length 308 [2021-10-16 02:31:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:11,724 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 3795 transitions. [2021-10-16 02:31:11,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 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) [2021-10-16 02:31:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3795 transitions. [2021-10-16 02:31:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-10-16 02:31:11,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:11,732 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:11,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:11,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,950 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:11,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1908275985, now seen corresponding path program 1 times [2021-10-16 02:31:11,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:11,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595329265] [2021-10-16 02:31:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:11,952 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:11,954 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:11,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:31:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:13,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:13,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 812 proven. 17 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-10-16 02:31:14,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 812 proven. 17 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-10-16 02:31:14,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:14,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595329265] [2021-10-16 02:31:14,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595329265] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:14,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1184644117] [2021-10-16 02:31:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:14,714 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:31:14,719 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:31:14,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 02:31:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:16,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-10-16 02:31:17,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-10-16 02:31:18,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1184644117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:18,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:31:18,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-16 02:31:18,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667629058] [2021-10-16 02:31:18,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:18,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:18,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:31:18,379 INFO L87 Difference]: Start difference. First operand 2964 states and 3795 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:18,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:18,484 INFO L93 Difference]: Finished difference Result 6488 states and 8366 transitions. [2021-10-16 02:31:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 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 312 [2021-10-16 02:31:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:18,491 INFO L225 Difference]: With dead ends: 6488 [2021-10-16 02:31:18,491 INFO L226 Difference]: Without dead ends: 3698 [2021-10-16 02:31:18,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1238 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:31:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-10-16 02:31:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2021-10-16 02:31:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3697 states have (on average 1.287530430078442) internal successors, (4760), 3697 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 4760 transitions. [2021-10-16 02:31:18,647 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 4760 transitions. Word has length 312 [2021-10-16 02:31:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:18,648 INFO L470 AbstractCegarLoop]: Abstraction has 3698 states and 4760 transitions. [2021-10-16 02:31:18,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 4760 transitions. [2021-10-16 02:31:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-10-16 02:31:18,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:18,655 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 7, 7, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:18,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:18,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-10-16 02:31:19,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:19,069 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1909065204, now seen corresponding path program 1 times [2021-10-16 02:31:19,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:19,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164604931] [2021-10-16 02:31:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:19,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:19,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:19,072 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:19,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 02:31:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:20,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:20,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-10-16 02:31:21,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-10-16 02:31:22,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:22,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164604931] [2021-10-16 02:31:22,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164604931] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:22,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:22,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:22,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152344727] [2021-10-16 02:31:22,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:22,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:22,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:22,041 INFO L87 Difference]: Start difference. First operand 3698 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 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) [2021-10-16 02:31:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:22,185 INFO L93 Difference]: Finished difference Result 7263 states and 9365 transitions. [2021-10-16 02:31:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 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) Word has length 318 [2021-10-16 02:31:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:22,213 INFO L225 Difference]: With dead ends: 7263 [2021-10-16 02:31:22,213 INFO L226 Difference]: Without dead ends: 3571 [2021-10-16 02:31:22,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-10-16 02:31:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 3545. [2021-10-16 02:31:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 3544 states have (on average 1.2934537246049662) internal successors, (4584), 3544 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4584 transitions. [2021-10-16 02:31:22,352 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4584 transitions. Word has length 318 [2021-10-16 02:31:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:22,352 INFO L470 AbstractCegarLoop]: Abstraction has 3545 states and 4584 transitions. [2021-10-16 02:31:22,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 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) [2021-10-16 02:31:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4584 transitions. [2021-10-16 02:31:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-10-16 02:31:22,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:22,360 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 12, 10, 10, 8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:22,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:22,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:22,578 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:22,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2040881673, now seen corresponding path program 1 times [2021-10-16 02:31:22,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:22,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651752375] [2021-10-16 02:31:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:22,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:22,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:22,581 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:22,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:31:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:24,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:24,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-16 02:31:25,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-16 02:31:26,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:26,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651752375] [2021-10-16 02:31:26,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651752375] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:26,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1358031711] [2021-10-16 02:31:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:26,041 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:26,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:31:26,042 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:31:26,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 02:31:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:28,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:28,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-16 02:31:29,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-16 02:31:30,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1358031711] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:30,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513899966] [2021-10-16 02:31:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:30,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:31:30,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:30,340 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:31:30,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 02:31:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:32,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:33,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-16 02:31:33,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1242 proven. 26 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2021-10-16 02:31:34,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513899966] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:34,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:31:34,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:31:34,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839770609] [2021-10-16 02:31:34,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:34,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:34,577 INFO L87 Difference]: Start difference. First operand 3545 states and 4584 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:34,873 INFO L93 Difference]: Finished difference Result 10731 states and 13936 transitions. [2021-10-16 02:31:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:31:34,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 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 422 [2021-10-16 02:31:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:34,885 INFO L225 Difference]: With dead ends: 10731 [2021-10-16 02:31:34,885 INFO L226 Difference]: Without dead ends: 7207 [2021-10-16 02:31:34,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2528 GetRequests, 2525 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:31:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7207 states. [2021-10-16 02:31:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7207 to 4641. [2021-10-16 02:31:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4640 states have (on average 1.3155172413793104) internal successors, (6104), 4640 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 6104 transitions. [2021-10-16 02:31:35,181 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 6104 transitions. Word has length 422 [2021-10-16 02:31:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:35,182 INFO L470 AbstractCegarLoop]: Abstraction has 4641 states and 6104 transitions. [2021-10-16 02:31:35,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 6104 transitions. [2021-10-16 02:31:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-10-16 02:31:35,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:35,202 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:35,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:35,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:35,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:35,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:31:35,817 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:35,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:35,818 INFO L82 PathProgramCache]: Analyzing trace with hash -787617399, now seen corresponding path program 1 times [2021-10-16 02:31:35,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:35,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890810318] [2021-10-16 02:31:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:35,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:35,820 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:35,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 02:31:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:38,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:38,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 1486 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2021-10-16 02:31:38,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 1486 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2021-10-16 02:31:39,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:39,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890810318] [2021-10-16 02:31:39,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890810318] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:39,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:39,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:39,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421099061] [2021-10-16 02:31:39,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:39,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:39,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:39,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:39,816 INFO L87 Difference]: Start difference. First operand 4641 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:40,038 INFO L93 Difference]: Finished difference Result 9287 states and 12213 transitions. [2021-10-16 02:31:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:40,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 482 [2021-10-16 02:31:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:40,047 INFO L225 Difference]: With dead ends: 9287 [2021-10-16 02:31:40,047 INFO L226 Difference]: Without dead ends: 4667 [2021-10-16 02:31:40,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2021-10-16 02:31:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4481. [2021-10-16 02:31:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 1.2892857142857144) internal successors, (5776), 4480 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 5776 transitions. [2021-10-16 02:31:40,200 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 5776 transitions. Word has length 482 [2021-10-16 02:31:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:40,201 INFO L470 AbstractCegarLoop]: Abstraction has 4481 states and 5776 transitions. [2021-10-16 02:31:40,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 5776 transitions. [2021-10-16 02:31:40,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-10-16 02:31:40,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:40,210 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:40,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:40,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:40,425 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:40,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1511195565, now seen corresponding path program 1 times [2021-10-16 02:31:40,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:40,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553618532] [2021-10-16 02:31:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:40,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:40,427 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:40,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-16 02:31:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:42,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:42,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2695 backedges. 1566 proven. 0 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2021-10-16 02:31:43,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2695 backedges. 1566 proven. 0 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2021-10-16 02:31:44,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:44,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553618532] [2021-10-16 02:31:44,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553618532] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:44,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:44,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:44,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828878690] [2021-10-16 02:31:44,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:44,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:44,857 INFO L87 Difference]: Start difference. First operand 4481 states and 5776 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:45,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:45,118 INFO L93 Difference]: Finished difference Result 9517 states and 12487 transitions. [2021-10-16 02:31:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:45,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 484 [2021-10-16 02:31:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:45,128 INFO L225 Difference]: With dead ends: 9517 [2021-10-16 02:31:45,128 INFO L226 Difference]: Without dead ends: 5057 [2021-10-16 02:31:45,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2021-10-16 02:31:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 5025. [2021-10-16 02:31:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 5024 states have (on average 1.2738853503184713) internal successors, (6400), 5024 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6400 transitions. [2021-10-16 02:31:45,289 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6400 transitions. Word has length 484 [2021-10-16 02:31:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:45,290 INFO L470 AbstractCegarLoop]: Abstraction has 5025 states and 6400 transitions. [2021-10-16 02:31:45,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6400 transitions. [2021-10-16 02:31:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-10-16 02:31:45,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:45,299 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 17, 16, 14, 14, 12, 12, 10, 10, 10, 10, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:45,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:45,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:45,525 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:45,525 INFO L82 PathProgramCache]: Analyzing trace with hash -983079863, now seen corresponding path program 1 times [2021-10-16 02:31:45,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:45,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118028293] [2021-10-16 02:31:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:45,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:45,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:45,527 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:45,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 02:31:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:48,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:48,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3492 backedges. 2013 proven. 0 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2021-10-16 02:31:49,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3492 backedges. 2013 proven. 0 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2021-10-16 02:31:50,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:50,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118028293] [2021-10-16 02:31:50,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118028293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:50,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:50,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:50,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508012041] [2021-10-16 02:31:50,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:50,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:50,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:50,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:50,261 INFO L87 Difference]: Start difference. First operand 5025 states and 6400 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:50,492 INFO L93 Difference]: Finished difference Result 9415 states and 11973 transitions. [2021-10-16 02:31:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:50,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 546 [2021-10-16 02:31:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:50,504 INFO L225 Difference]: With dead ends: 9415 [2021-10-16 02:31:50,505 INFO L226 Difference]: Without dead ends: 4411 [2021-10-16 02:31:50,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1089 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2021-10-16 02:31:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 4103. [2021-10-16 02:31:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4102 states have (on average 1.2184300341296928) internal successors, (4998), 4102 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 4998 transitions. [2021-10-16 02:31:50,671 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 4998 transitions. Word has length 546 [2021-10-16 02:31:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:50,672 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 4998 transitions. [2021-10-16 02:31:50,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 4998 transitions. [2021-10-16 02:31:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2021-10-16 02:31:50,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:50,682 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 22, 21, 19, 19, 17, 17, 15, 15, 15, 15, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:50,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:50,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:50,897 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:50,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1839633368, now seen corresponding path program 1 times [2021-10-16 02:31:50,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:50,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871561548] [2021-10-16 02:31:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:50,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:50,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:50,900 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:50,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-16 02:31:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:53,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:53,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-16 02:31:55,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-16 02:31:56,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:56,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871561548] [2021-10-16 02:31:56,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871561548] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:31:56,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984015686] [2021-10-16 02:31:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:56,381 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:56,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:31:56,382 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:31:56,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-10-16 02:32:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:00,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:01,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-16 02:32:02,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-16 02:32:03,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [984015686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:03,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732059439] [2021-10-16 02:32:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:03,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:32:03,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:32:03,549 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:32:03,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-16 02:32:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:07,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:32:07,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-16 02:32:09,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6078 backedges. 3626 proven. 17 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2021-10-16 02:32:10,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732059439] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:10,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:32:10,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:32:10,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142782949] [2021-10-16 02:32:10,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:32:10,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:32:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:32:10,618 INFO L87 Difference]: Start difference. First operand 4103 states and 4998 transitions. Second operand has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:11,084 INFO L93 Difference]: Finished difference Result 5437 states and 6642 transitions. [2021-10-16 02:32:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:32:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 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 726 [2021-10-16 02:32:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:11,086 INFO L225 Difference]: With dead ends: 5437 [2021-10-16 02:32:11,086 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:32:11,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4356 GetRequests, 4349 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:32:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:32:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:32:11,092 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) [2021-10-16 02:32:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:32:11,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 726 [2021-10-16 02:32:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:11,093 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:32:11,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:32:11,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:32:11,096 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:32:11,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:11,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-16 02:32:11,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-10-16 02:32:11,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:32:11,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:32:11,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:11,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:11,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:12,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:32:17,403 INFO L857 garLoopResultBuilder]: For program point L531(lines 531 535) no Hoare annotation was computed. [2021-10-16 02:32:17,404 INFO L857 garLoopResultBuilder]: For program point L531-2(lines 531 535) no Hoare annotation was computed. [2021-10-16 02:32:17,404 INFO L853 garLoopResultBuilder]: At program point L366(lines 342 384) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,404 INFO L853 garLoopResultBuilder]: At program point L201(lines 197 562) the Hoare annotation is: (let ((.cse6 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse5 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 (not .cse6)) (and (or (and .cse0 .cse1 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) .cse6 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))))) [2021-10-16 02:32:17,405 INFO L853 garLoopResultBuilder]: At program point L168(lines 164 573) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,405 INFO L853 garLoopResultBuilder]: At program point L135(lines 134 583) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32)))) (.cse5 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse6 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse3 .cse4 .cse5 .cse6) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6))) [2021-10-16 02:32:17,405 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 104) no Hoare annotation was computed. [2021-10-16 02:32:17,406 INFO L857 garLoopResultBuilder]: For program point L433(lines 433 435) no Hoare annotation was computed. [2021-10-16 02:32:17,406 INFO L853 garLoopResultBuilder]: At program point L400(lines 391 423) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,406 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 303) no Hoare annotation was computed. [2021-10-16 02:32:17,407 INFO L857 garLoopResultBuilder]: For program point L301-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:32:17,407 INFO L860 garLoopResultBuilder]: At program point L632(lines 623 634) the Hoare annotation is: true [2021-10-16 02:32:17,407 INFO L857 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2021-10-16 02:32:17,407 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 560) no Hoare annotation was computed. [2021-10-16 02:32:17,408 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 571) no Hoare annotation was computed. [2021-10-16 02:32:17,408 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 582) no Hoare annotation was computed. [2021-10-16 02:32:17,408 INFO L857 garLoopResultBuilder]: For program point L600(lines 600 604) no Hoare annotation was computed. [2021-10-16 02:32:17,408 INFO L857 garLoopResultBuilder]: For program point L336(lines 336 340) no Hoare annotation was computed. [2021-10-16 02:32:17,408 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 272) no Hoare annotation was computed. [2021-10-16 02:32:17,409 INFO L857 garLoopResultBuilder]: For program point L336-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:32:17,409 INFO L857 garLoopResultBuilder]: For program point L237(lines 237 248) no Hoare annotation was computed. [2021-10-16 02:32:17,409 INFO L857 garLoopResultBuilder]: For program point L237-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:32:17,409 INFO L857 garLoopResultBuilder]: For program point L403(lines 403 421) no Hoare annotation was computed. [2021-10-16 02:32:17,409 INFO L857 garLoopResultBuilder]: For program point L503(lines 503 506) no Hoare annotation was computed. [2021-10-16 02:32:17,409 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 410) no Hoare annotation was computed. [2021-10-16 02:32:17,410 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 242) no Hoare annotation was computed. [2021-10-16 02:32:17,410 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 559) no Hoare annotation was computed. [2021-10-16 02:32:17,410 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 570) no Hoare annotation was computed. [2021-10-16 02:32:17,410 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 581) no Hoare annotation was computed. [2021-10-16 02:32:17,411 INFO L853 garLoopResultBuilder]: At program point L207(lines 203 560) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) .cse4 .cse5 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse5))) [2021-10-16 02:32:17,411 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 571) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,412 INFO L857 garLoopResultBuilder]: For program point L472(lines 472 474) no Hoare annotation was computed. [2021-10-16 02:32:17,412 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 312) no Hoare annotation was computed. [2021-10-16 02:32:17,412 INFO L857 garLoopResultBuilder]: For program point L308-2(lines 308 312) no Hoare annotation was computed. [2021-10-16 02:32:17,412 INFO L857 garLoopResultBuilder]: For program point L209(lines 209 558) no Hoare annotation was computed. [2021-10-16 02:32:17,412 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 569) no Hoare annotation was computed. [2021-10-16 02:32:17,413 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 580) no Hoare annotation was computed. [2021-10-16 02:32:17,413 INFO L853 garLoopResultBuilder]: At program point L110-2(lines 110 609) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse10 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse12 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse6 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse14 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse15 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not .cse4)) (.cse8 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32)))) (.cse13 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse4) (and .cse9 .cse0 .cse3) (and .cse7 .cse10 .cse8 .cse4) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse4) (and .cse11 .cse4 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse12 .cse3 .cse5) (and .cse11 .cse1 .cse4 .cse5) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse10 .cse4 .cse5) (and .cse12 .cse8 .cse5 .cse13) (and .cse14 .cse8 .cse4 .cse5 .cse13) (and .cse11 .cse4 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse2) (and (or (and .cse15 .cse8 .cse4) (and .cse15 .cse2)) .cse5 .cse13) (and .cse14 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse9 .cse0 .cse8 .cse13) (and .cse0 .cse15 .cse2 .cse3) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8 .cse4 .cse5 .cse13) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5)))) [2021-10-16 02:32:17,413 INFO L857 garLoopResultBuilder]: For program point L441-1(lines 441 449) no Hoare annotation was computed. [2021-10-16 02:32:17,413 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-10-16 02:32:17,414 INFO L853 garLoopResultBuilder]: At program point L177(lines 176 569) the Hoare annotation is: (let ((.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not .cse2)) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:32:17,414 INFO L853 garLoopResultBuilder]: At program point L144(lines 137 582) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (and .cse0 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) .cse1))) [2021-10-16 02:32:17,414 INFO L857 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2021-10-16 02:32:17,414 INFO L857 garLoopResultBuilder]: For program point L541(lines 541 547) no Hoare annotation was computed. [2021-10-16 02:32:17,415 INFO L857 garLoopResultBuilder]: For program point L508(lines 508 510) no Hoare annotation was computed. [2021-10-16 02:32:17,415 INFO L857 garLoopResultBuilder]: For program point L541-1(lines 541 547) no Hoare annotation was computed. [2021-10-16 02:32:17,415 INFO L857 garLoopResultBuilder]: For program point L508-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:32:17,415 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 557) no Hoare annotation was computed. [2021-10-16 02:32:17,415 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 568) no Hoare annotation was computed. [2021-10-16 02:32:17,416 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 579) no Hoare annotation was computed. [2021-10-16 02:32:17,416 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 590) no Hoare annotation was computed. [2021-10-16 02:32:17,416 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 447) no Hoare annotation was computed. [2021-10-16 02:32:17,416 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 383) no Hoare annotation was computed. [2021-10-16 02:32:17,416 INFO L853 garLoopResultBuilder]: At program point L213(lines 209 558) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) .cse5 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))))) [2021-10-16 02:32:17,417 INFO L853 garLoopResultBuilder]: At program point L114(lines 113 590) the Hoare annotation is: false [2021-10-16 02:32:17,417 INFO L860 garLoopResultBuilder]: At program point L610(lines 109 611) the Hoare annotation is: true [2021-10-16 02:32:17,417 INFO L857 garLoopResultBuilder]: For program point L544(lines 544 546) no Hoare annotation was computed. [2021-10-16 02:32:17,417 INFO L853 garLoopResultBuilder]: At program point L412(lines 403 421) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,418 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 556) no Hoare annotation was computed. [2021-10-16 02:32:17,418 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 567) no Hoare annotation was computed. [2021-10-16 02:32:17,418 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 578) no Hoare annotation was computed. [2021-10-16 02:32:17,418 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 589) no Hoare annotation was computed. [2021-10-16 02:32:17,419 INFO L857 garLoopResultBuilder]: For program point L348(lines 348 382) no Hoare annotation was computed. [2021-10-16 02:32:17,419 INFO L857 garLoopResultBuilder]: For program point L348-1(lines 348 382) no Hoare annotation was computed. [2021-10-16 02:32:17,419 INFO L860 garLoopResultBuilder]: At program point L216(lines 215 556) the Hoare annotation is: true [2021-10-16 02:32:17,422 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 568) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,422 INFO L853 garLoopResultBuilder]: At program point L150(lines 146 579) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 .cse1 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))))) [2021-10-16 02:32:17,422 INFO L857 garLoopResultBuilder]: For program point L481(lines 481 483) no Hoare annotation was computed. [2021-10-16 02:32:17,422 INFO L857 garLoopResultBuilder]: For program point L415(lines 415 417) no Hoare annotation was computed. [2021-10-16 02:32:17,423 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 379) no Hoare annotation was computed. [2021-10-16 02:32:17,423 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:32:17,424 INFO L860 garLoopResultBuilder]: At program point L218(lines 217 556) the Hoare annotation is: true [2021-10-16 02:32:17,424 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 566) no Hoare annotation was computed. [2021-10-16 02:32:17,424 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 577) no Hoare annotation was computed. [2021-10-16 02:32:17,424 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 588) no Hoare annotation was computed. [2021-10-16 02:32:17,425 INFO L857 garLoopResultBuilder]: For program point L615(lines 615 617) no Hoare annotation was computed. [2021-10-16 02:32:17,425 INFO L857 garLoopResultBuilder]: For program point L615-2(lines 615 617) no Hoare annotation was computed. [2021-10-16 02:32:17,425 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 519) no Hoare annotation was computed. [2021-10-16 02:32:17,425 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 287) no Hoare annotation was computed. [2021-10-16 02:32:17,425 INFO L857 garLoopResultBuilder]: For program point L285-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:32:17,426 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 326) no Hoare annotation was computed. [2021-10-16 02:32:17,426 INFO L857 garLoopResultBuilder]: For program point L319-2(lines 319 326) no Hoare annotation was computed. [2021-10-16 02:32:17,426 INFO L857 garLoopResultBuilder]: For program point L254(lines 254 264) no Hoare annotation was computed. [2021-10-16 02:32:17,426 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 565) no Hoare annotation was computed. [2021-10-16 02:32:17,426 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 576) no Hoare annotation was computed. [2021-10-16 02:32:17,426 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 587) no Hoare annotation was computed. [2021-10-16 02:32:17,427 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 377) no Hoare annotation was computed. [2021-10-16 02:32:17,427 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 258) no Hoare annotation was computed. [2021-10-16 02:32:17,427 INFO L853 garLoopResultBuilder]: At program point L222(lines 116 589) the Hoare annotation is: false [2021-10-16 02:32:17,427 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 566) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,428 INFO L853 garLoopResultBuilder]: At program point L156(lines 152 577) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,428 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:32:17,428 INFO L860 garLoopResultBuilder]: At program point L620(lines 22 622) the Hoare annotation is: true [2021-10-16 02:32:17,428 INFO L853 garLoopResultBuilder]: At program point L554(lines 110 609) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse10 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse12 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse6 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse14 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse15 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not .cse4)) (.cse8 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32)))) (.cse13 (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse4) (and .cse9 .cse0 .cse3) (and .cse7 .cse10 .cse8 .cse4) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse4) (and .cse11 .cse4 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse12 .cse3 .cse5) (and .cse11 .cse1 .cse4 .cse5) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse10 .cse4 .cse5) (and .cse12 .cse8 .cse5 .cse13) (and .cse14 .cse8 .cse4 .cse5 .cse13) (and .cse11 .cse4 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse5) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and .cse6 .cse7 .cse2) (and (or (and .cse15 .cse8 .cse4) (and .cse15 .cse2)) .cse5 .cse13) (and .cse14 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse9 .cse0 .cse8 .cse13) (and .cse0 .cse15 .cse2 .cse3) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8 .cse4 .cse5 .cse13) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse4 .cse5)))) [2021-10-16 02:32:17,429 INFO L857 garLoopResultBuilder]: For program point L455(lines 455 457) no Hoare annotation was computed. [2021-10-16 02:32:17,429 INFO L857 garLoopResultBuilder]: For program point L323(lines 323 325) no Hoare annotation was computed. [2021-10-16 02:32:17,429 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 564) no Hoare annotation was computed. [2021-10-16 02:32:17,429 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 575) no Hoare annotation was computed. [2021-10-16 02:32:17,429 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 586) no Hoare annotation was computed. [2021-10-16 02:32:17,429 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 361) no Hoare annotation was computed. [2021-10-16 02:32:17,430 INFO L857 garLoopResultBuilder]: For program point L357-2(lines 357 361) no Hoare annotation was computed. [2021-10-16 02:32:17,430 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:32:17,430 INFO L857 garLoopResultBuilder]: For program point L490(lines 490 492) no Hoare annotation was computed. [2021-10-16 02:32:17,430 INFO L857 garLoopResultBuilder]: For program point L391(lines 391 423) no Hoare annotation was computed. [2021-10-16 02:32:17,430 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:32:17,431 INFO L857 garLoopResultBuilder]: For program point L524(lines 524 526) no Hoare annotation was computed. [2021-10-16 02:32:17,431 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 467) no Hoare annotation was computed. [2021-10-16 02:32:17,431 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 398) no Hoare annotation was computed. [2021-10-16 02:32:17,431 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:32:17,431 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 563) no Hoare annotation was computed. [2021-10-16 02:32:17,432 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 574) no Hoare annotation was computed. [2021-10-16 02:32:17,432 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:32:17,432 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 585) no Hoare annotation was computed. [2021-10-16 02:32:17,432 INFO L857 garLoopResultBuilder]: For program point L591(lines 591 607) no Hoare annotation was computed. [2021-10-16 02:32:17,432 INFO L853 garLoopResultBuilder]: At program point L525(lines 83 621) the Hoare annotation is: false [2021-10-16 02:32:17,433 INFO L853 garLoopResultBuilder]: At program point L195(lines 191 564) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8496 32))) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0))) [2021-10-16 02:32:17,433 INFO L853 garLoopResultBuilder]: At program point L162(lines 158 575) the Hoare annotation is: (and (not (= (_ bv8497 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8465 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) (not (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:32:17,433 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 98) no Hoare annotation was computed. [2021-10-16 02:32:17,433 INFO L857 garLoopResultBuilder]: For program point L96-2(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:32:17,433 INFO L857 garLoopResultBuilder]: For program point L592(lines 592 606) no Hoare annotation was computed. [2021-10-16 02:32:17,434 INFO L857 garLoopResultBuilder]: For program point L493(lines 493 497) no Hoare annotation was computed. [2021-10-16 02:32:17,434 INFO L857 garLoopResultBuilder]: For program point L493-2(lines 493 497) no Hoare annotation was computed. [2021-10-16 02:32:17,434 INFO L857 garLoopResultBuilder]: For program point L593(lines 593 598) no Hoare annotation was computed. [2021-10-16 02:32:17,434 INFO L857 garLoopResultBuilder]: For program point L527(lines 527 529) no Hoare annotation was computed. [2021-10-16 02:32:17,434 INFO L857 garLoopResultBuilder]: For program point L593-2(lines 592 606) no Hoare annotation was computed. [2021-10-16 02:32:17,434 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 562) no Hoare annotation was computed. [2021-10-16 02:32:17,435 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 573) no Hoare annotation was computed. [2021-10-16 02:32:17,435 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 584) no Hoare annotation was computed. [2021-10-16 02:32:17,435 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:32:17,435 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 619) no Hoare annotation was computed. [2021-10-16 02:32:17,435 INFO L857 garLoopResultBuilder]: For program point L462(lines 462 464) no Hoare annotation was computed. [2021-10-16 02:32:17,436 INFO L853 garLoopResultBuilder]: At program point L132(lines 128 585) the Hoare annotation is: false [2021-10-16 02:32:17,436 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 597) no Hoare annotation was computed. [2021-10-16 02:32:17,436 INFO L857 garLoopResultBuilder]: For program point L298(lines 298 304) no Hoare annotation was computed. [2021-10-16 02:32:17,436 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-10-16 02:32:17,437 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 373) no Hoare annotation was computed. [2021-10-16 02:32:17,437 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 561) no Hoare annotation was computed. [2021-10-16 02:32:17,437 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 572) no Hoare annotation was computed. [2021-10-16 02:32:17,437 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 583) no Hoare annotation was computed. [2021-10-16 02:32:17,437 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2021-10-16 02:32:17,438 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 83 621) no Hoare annotation was computed. [2021-10-16 02:32:17,443 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:32:17,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:32:17 BoogieIcfgContainer [2021-10-16 02:32:17,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:32:17,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:32:17,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:32:17,520 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:32:17,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:31" (3/4) ... [2021-10-16 02:32:17,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:32:17,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:32:17,557 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:32:17,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:32:17,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:32:17,720 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:32:17,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:32:17,722 INFO L168 Benchmark]: Toolchain (without parser) took 108050.55 ms. Allocated memory was 65.0 MB in the beginning and 687.9 MB in the end (delta: 622.9 MB). Free memory was 43.7 MB in the beginning and 216.9 MB in the end (delta: -173.2 MB). Peak memory consumption was 450.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:17,723 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 65.0 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:32:17,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.89 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 44.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:17,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.88 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 41.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:17,725 INFO L168 Benchmark]: Boogie Preprocessor took 71.74 ms. Allocated memory is still 65.0 MB. Free memory was 41.9 MB in the beginning and 39.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:17,725 INFO L168 Benchmark]: RCFGBuilder took 711.95 ms. Allocated memory is still 65.0 MB. Free memory was 39.8 MB in the beginning and 30.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:17,726 INFO L168 Benchmark]: TraceAbstraction took 106463.01 ms. Allocated memory was 65.0 MB in the beginning and 687.9 MB in the end (delta: 622.9 MB). Free memory was 30.4 MB in the beginning and 227.4 MB in the end (delta: -197.0 MB). Peak memory consumption was 501.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:17,726 INFO L168 Benchmark]: Witness Printer took 201.16 ms. Allocated memory is still 687.9 MB. Free memory was 227.4 MB in the beginning and 216.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:17,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 65.0 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 495.89 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 44.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.88 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 41.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.74 ms. Allocated memory is still 65.0 MB. Free memory was 41.9 MB in the beginning and 39.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 711.95 ms. Allocated memory is still 65.0 MB. Free memory was 39.8 MB in the beginning and 30.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 106463.01 ms. Allocated memory was 65.0 MB in the beginning and 687.9 MB in the end (delta: 622.9 MB). Free memory was 30.4 MB in the beginning and 227.4 MB in the end (delta: -197.0 MB). Peak memory consumption was 501.0 MB. Max. memory is 16.1 GB. * Witness Printer took 201.16 ms. Allocated memory is still 687.9 MB. Free memory was 227.4 MB in the beginning and 216.9 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: 619]: 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, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 106315.2ms, OverallIterations: 23, TraceHistogramMax: 24, EmptinessCheckTime: 187.0ms, AutomataDifference: 6600.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5689.6ms, InitialAbstractionConstructionTime: 15.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4985 SDtfs, 3858 SDslu, 5603 SDs, 0 SdLazy, 3300 SolverSat, 643 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3111.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18492 GetRequests, 18433 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 288.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5025occurred in iteration=21, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2359.4ms AutomataMinimizationTime, 23 MinimizatonAttempts, 9741 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 196 NumberOfFragments, 1297 HoareAnnotationTreeSize, 28 FomulaSimplifications, 42353 FormulaSimplificationTreeSizeReduction, 1489.4ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 16702 FormulaSimplificationTreeSizeReductionInter, 4182.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 588.2ms SsaConstructionTime, 2489.4ms SatisfiabilityAnalysisTime, 38844.4ms InterpolantComputationTime, 9266 NumberOfCodeBlocks, 9266 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 18470 ConstructedInterpolants, 0 QuantifiedInterpolants, 24878 SizeOfPredicates, 16 NumberOfNonLiveVariables, 10961 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 62 InterpolantComputations, 40 PerfectInterpolantSequences, 86208/86628 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 1 specifications checked. All of them hold - InvariantResult [Line: 83]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) || (((((((!(8497bv32 == s__state) && !(4bv32 == blastFlag)) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) - InvariantResult [Line: 215]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: (((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8496bv32 == s__state)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) || ((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(8496bv32 == s__state)) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: (((!(s__s3__tmp__next_state___0 == 8496bv32) && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) || ((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && blastFlag == 0bv32) && !(8466bv32 == s__state)) && !(8496bv32 == s__state)) - InvariantResult [Line: 391]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((3bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(4bv32 == blastFlag) && 3bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((3bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 3bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32)) || (((((8640bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) || (8640bv32 == s__state && s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((3bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (8464bv32 == s__state && blastFlag == 0bv32)) || ((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 342]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: ((((((8576bv32 == s__s3__tmp__next_state___0 && !(8497bv32 == s__state)) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 403]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: ((((((!(8497bv32 == s__state) && 3bv32 == blastFlag) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(8496bv32 == s__state)) && !(s__hit == 0bv32)) || (((((((!(8497bv32 == s__state) && 3bv32 == blastFlag) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8496bv32 == s__state)) && !(8497bv32 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 623]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: ((((((8576bv32 == s__s3__tmp__next_state___0 && !(8497bv32 == s__state)) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: ((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && blastFlag == 1bv32) || (((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: (((((((!(8497bv32 == s__state) && 3bv32 == blastFlag) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(8496bv32 == s__state)) && !(s__hit == 0bv32)) || (((((((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && !(8496bv32 == s__state)) || (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(8496bv32 == s__state))) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 158]: Loop Invariant Derived loop invariant: (((((!(8497bv32 == s__state) && !(8465bv32 == s__state)) && !(8464bv32 == s__state)) && !(8466bv32 == s__state)) && s__hit == 0bv32) && !(8496bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((3bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(4bv32 == blastFlag) && 3bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((3bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 3bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32)) || (((((8640bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) || (8640bv32 == s__state && s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8496bv32)) && !(8497bv32 == s__s3__tmp__next_state___0))) || (((3bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || ((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8496bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8497bv32 == s__s3__tmp__next_state___0))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:32:17,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7fc4b6d-b25f-43d6-90a2-83a7f8e5d2ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...