./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw --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 008f13fd1550f54b25db8c20ee30759d3819e45d65744da9f4f77718b68e7e66 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:17:43,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:17:43,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:17:43,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:17:43,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:17:43,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:17:43,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:17:43,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:17:43,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:17:43,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:17:43,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:17:43,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:17:43,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:17:43,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:17:43,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:17:43,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:17:43,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:17:43,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:17:43,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:17:43,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:17:43,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:17:43,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:17:43,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:17:43,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:17:43,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:17:43,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:17:43,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:17:43,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:17:43,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:17:43,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:17:43,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:17:43,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:17:43,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:17:43,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:17:43,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:17:43,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:17:43,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:17:43,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:17:43,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:17:43,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:17:43,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:17:43,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:17:43,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:17:43,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:17:43,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:17:43,597 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:17:43,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:17:43,597 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:17:43,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:17:43,597 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:17:43,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:17:43,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:17:43,605 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:17:43,605 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:17:43,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:17:43,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:17:43,606 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:17:43,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:17:43,607 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:17:43,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:17:43,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:17:43,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:17:43,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:17:43,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:17:43,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:17:43,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:17:43,609 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:17:43,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:17:43,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:17:43,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:17:43,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:17:43,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:17:43,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:17:43,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:17:43,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:17:43,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:17:43,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:17:43,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:17:43,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:17:43,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:17:43,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:17:43,614 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_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 008f13fd1550f54b25db8c20ee30759d3819e45d65744da9f4f77718b68e7e66 [2021-10-20 05:17:43,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:17:43,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:17:43,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:17:43,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:17:43,969 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:17:43,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2021-10-20 05:17:44,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/data/e26245134/505cc32b37bb411794f19a25368bd17b/FLAGefc98281c [2021-10-20 05:17:44,599 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:17:44,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2021-10-20 05:17:44,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/data/e26245134/505cc32b37bb411794f19a25368bd17b/FLAGefc98281c [2021-10-20 05:17:44,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/data/e26245134/505cc32b37bb411794f19a25368bd17b [2021-10-20 05:17:44,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:17:44,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:17:44,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:17:44,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:17:44,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:17:44,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:17:44" (1/1) ... [2021-10-20 05:17:44,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21617ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:44, skipping insertion in model container [2021-10-20 05:17:44,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:17:44" (1/1) ... [2021-10-20 05:17:44,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:17:44,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:17:45,159 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_23b9cd59-d7a7-44df-a44d-3967912d97da/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c[489,502] [2021-10-20 05:17:45,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:17:45,185 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:17:45,197 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_23b9cd59-d7a7-44df-a44d-3967912d97da/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c[489,502] [2021-10-20 05:17:45,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:17:45,220 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:17:45,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45 WrapperNode [2021-10-20 05:17:45,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:17:45,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:17:45,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:17:45,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:17:45,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:17:45,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:17:45,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:17:45,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:17:45,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:17:45,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:17:45,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:17:45,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:17:45,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (1/1) ... [2021-10-20 05:17:45,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:17:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:17:45,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:17:45,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:17:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:17:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:17:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:17:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:17:45,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:17:45,814 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-20 05:17:45,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:17:45 BoogieIcfgContainer [2021-10-20 05:17:45,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:17:45,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:17:45,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:17:45,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:17:45,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:17:44" (1/3) ... [2021-10-20 05:17:45,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a89fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:17:45, skipping insertion in model container [2021-10-20 05:17:45,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:17:45" (2/3) ... [2021-10-20 05:17:45,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a89fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:17:45, skipping insertion in model container [2021-10-20 05:17:45,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:17:45" (3/3) ... [2021-10-20 05:17:45,828 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound1.c [2021-10-20 05:17:45,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:17:45,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-20 05:17:45,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:17:45,907 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:17:45,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-20 05:17:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 05:17:45,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:17:45,932 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 05:17:45,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 05:17:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:17:45,940 INFO L82 PathProgramCache]: Analyzing trace with hash 5460787, now seen corresponding path program 1 times [2021-10-20 05:17:45,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:17:45,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611516478] [2021-10-20 05:17:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:45,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:17:46,087 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:17:46,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982850564] [2021-10-20 05:17:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:46,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:46,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:17:46,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:17:46,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 05:17:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:17:46,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 05:17:46,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:17:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:46,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:17:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:46,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:17:46,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611516478] [2021-10-20 05:17:46,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:17:46,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982850564] [2021-10-20 05:17:46,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982850564] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:17:46,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:17:46,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:17:46,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133682380] [2021-10-20 05:17:46,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:17:46,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:17:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:17:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:17:46,495 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:17:46,651 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2021-10-20 05:17:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:17:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 4 [2021-10-20 05:17:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:17:46,661 INFO L225 Difference]: With dead ends: 90 [2021-10-20 05:17:46,661 INFO L226 Difference]: Without dead ends: 55 [2021-10-20 05:17:46,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:17:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-20 05:17:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2021-10-20 05:17:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-10-20 05:17:46,721 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 4 [2021-10-20 05:17:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:17:46,722 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-10-20 05:17:46,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-10-20 05:17:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:17:46,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:17:46,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:17:46,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:17:46,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-20 05:17:46,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 05:17:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:17:46,942 INFO L82 PathProgramCache]: Analyzing trace with hash 953005430, now seen corresponding path program 1 times [2021-10-20 05:17:46,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:17:46,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009267326] [2021-10-20 05:17:46,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:46,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:17:46,969 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:17:46,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774665912] [2021-10-20 05:17:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:46,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:46,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:17:46,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:17:46,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 05:17:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:17:47,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-20 05:17:47,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:17:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:47,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:17:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:47,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:17:47,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009267326] [2021-10-20 05:17:47,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:17:47,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774665912] [2021-10-20 05:17:47,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774665912] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:17:47,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:17:47,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:17:47,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162434987] [2021-10-20 05:17:47,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:17:47,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:17:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:17:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:17:47,301 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:17:47,393 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-10-20 05:17:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:17:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 6 [2021-10-20 05:17:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:17:47,396 INFO L225 Difference]: With dead ends: 55 [2021-10-20 05:17:47,396 INFO L226 Difference]: Without dead ends: 53 [2021-10-20 05:17:47,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:17:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-20 05:17:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2021-10-20 05:17:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-10-20 05:17:47,418 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 6 [2021-10-20 05:17:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:17:47,419 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-20 05:17:47,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-10-20 05:17:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:17:47,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:17:47,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:17:47,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:17:47,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:47,644 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 05:17:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:17:47,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1010340953, now seen corresponding path program 1 times [2021-10-20 05:17:47,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:17:47,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837463038] [2021-10-20 05:17:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:47,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:17:47,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:17:47,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29446845] [2021-10-20 05:17:47,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:47,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:47,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:17:47,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:17:47,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-20 05:17:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:17:47,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-20 05:17:47,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:17:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:47,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:17:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:47,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:17:47,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837463038] [2021-10-20 05:17:47,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:17:47,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29446845] [2021-10-20 05:17:48,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29446845] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:17:48,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:17:48,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:17:48,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051835806] [2021-10-20 05:17:48,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:17:48,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:17:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:17:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:17:48,002 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:17:48,074 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-10-20 05:17:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:17:48,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-20 05:17:48,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:17:48,076 INFO L225 Difference]: With dead ends: 54 [2021-10-20 05:17:48,076 INFO L226 Difference]: Without dead ends: 46 [2021-10-20 05:17:48,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:17:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-20 05:17:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-20 05:17:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-10-20 05:17:48,083 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 8 [2021-10-20 05:17:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:17:48,083 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-10-20 05:17:48,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-10-20 05:17:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 05:17:48,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:17:48,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:17:48,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:17:48,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:48,313 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 05:17:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:17:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash -58538116, now seen corresponding path program 1 times [2021-10-20 05:17:48,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:17:48,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795674321] [2021-10-20 05:17:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:48,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:17:48,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:17:48,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24769468] [2021-10-20 05:17:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:48,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:48,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:17:48,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:17:48,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-20 05:17:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:17:48,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:17:48,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:17:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:48,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:17:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:48,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:17:48,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795674321] [2021-10-20 05:17:48,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:17:48,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24769468] [2021-10-20 05:17:48,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24769468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:17:48,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:17:48,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:17:48,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613430230] [2021-10-20 05:17:48,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:17:48,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:17:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:17:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:17:48,536 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:17:48,573 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-10-20 05:17:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:17:48,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-20 05:17:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:17:48,574 INFO L225 Difference]: With dead ends: 43 [2021-10-20 05:17:48,575 INFO L226 Difference]: Without dead ends: 14 [2021-10-20 05:17:48,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:17:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-20 05:17:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-20 05:17:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-20 05:17:48,578 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2021-10-20 05:17:48,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:17:48,579 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-20 05:17:48,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-20 05:17:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-20 05:17:48,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:17:48,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:17:48,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:17:48,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:48,781 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 05:17:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:17:48,781 INFO L82 PathProgramCache]: Analyzing trace with hash -420396705, now seen corresponding path program 1 times [2021-10-20 05:17:48,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:17:48,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739099670] [2021-10-20 05:17:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:48,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:17:48,797 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:17:48,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792805485] [2021-10-20 05:17:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:17:48,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:48,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:17:48,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:17:48,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-20 05:17:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:17:48,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 05:17:48,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:17:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:48,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:17:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:17:49,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:17:49,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739099670] [2021-10-20 05:17:49,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:17:49,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792805485] [2021-10-20 05:17:49,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792805485] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:17:49,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:17:49,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-20 05:17:49,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126795760] [2021-10-20 05:17:49,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 05:17:49,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:17:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 05:17:49,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:17:49,098 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:17:49,157 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-20 05:17:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:17:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-20 05:17:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:17:49,158 INFO L225 Difference]: With dead ends: 14 [2021-10-20 05:17:49,158 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:17:49,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.5ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:17:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:17:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:17:49,159 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) [2021-10-20 05:17:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:17:49,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-20 05:17:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:17:49,160 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:17:49,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:17:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:17:49,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:17:49,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:17:49,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:17:49,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:17:49,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:17:49,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:17:49,164 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:17:49,164 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:17:49,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:17:49,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:17:49,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 05:17:49,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:17:49,713 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2021-10-20 05:17:49,714 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-20 05:17:49,714 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-20 05:17:49,714 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-20 05:17:49,714 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-20 05:17:49,715 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-20 05:17:49,715 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-20 05:17:49,716 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 40 41) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-20 05:17:49,716 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-20 05:17:49,717 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-20 05:17:49,717 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-20 05:17:49,717 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-20 05:17:49,717 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 05:17:49,717 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-20 05:17:49,718 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-20 05:17:49,718 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-20 05:17:49,718 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-10-20 05:17:49,718 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-10-20 05:17:49,718 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-20 05:17:49,719 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-20 05:17:49,719 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-20 05:17:49,719 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-20 05:17:49,719 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-20 05:17:49,719 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-20 05:17:49,720 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-10-20 05:17:49,721 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-20 05:17:49,721 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-20 05:17:49,726 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-20 05:17:49,726 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-20 05:17:49,726 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 05:17:49,726 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-20 05:17:49,728 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-20 05:17:49,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:17:49,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:17:49 BoogieIcfgContainer [2021-10-20 05:17:49,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:17:49,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:17:49,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:17:49,765 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:17:49,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:17:45" (3/4) ... [2021-10-20 05:17:49,768 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:17:49,782 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-10-20 05:17:49,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-20 05:17:49,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-20 05:17:49,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:17:49,842 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:17:49,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:17:49,844 INFO L168 Benchmark]: Toolchain (without parser) took 4880.15 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 79.5 MB in the beginning and 104.2 MB in the end (delta: -24.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:17:49,844 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 115.3 MB. Free memory was 85.8 MB in the beginning and 85.8 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:17:49,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.89 ms. Allocated memory is still 115.3 MB. Free memory was 79.3 MB in the beginning and 89.1 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:17:49,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.20 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 87.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:17:49,845 INFO L168 Benchmark]: Boogie Preprocessor took 26.07 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 86.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:17:49,847 INFO L168 Benchmark]: RCFGBuilder took 531.36 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 68.8 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:17:49,847 INFO L168 Benchmark]: TraceAbstraction took 3933.22 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 68.3 MB in the beginning and 108.5 MB in the end (delta: -40.2 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:17:49,849 INFO L168 Benchmark]: Witness Printer took 89.94 ms. Allocated memory is still 138.4 MB. Free memory was 108.5 MB in the beginning and 104.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:17:49,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 115.3 MB. Free memory was 85.8 MB in the beginning and 85.8 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.89 ms. Allocated memory is still 115.3 MB. Free memory was 79.3 MB in the beginning and 89.1 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.20 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 87.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.07 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 86.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 531.36 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 68.8 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3933.22 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 68.3 MB in the beginning and 108.5 MB in the end (delta: -40.2 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. * Witness Printer took 89.94 ms. Allocated memory is still 138.4 MB. Free memory was 108.5 MB in the beginning and 104.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 32 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 3836.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.1ms, AutomataDifference: 470.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 323.7ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 118 SDslu, 135 SDs, 0 SdLazy, 171 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 221.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 209.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=1, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 65.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 27 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 17 NumberOfFragments, 230 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 55.7ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 261.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 31.8ms SsaConstructionTime, 87.6ms SatisfiabilityAnalysisTime, 1086.5ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 6 QuantifiedInterpolants, 458 SizeOfPredicates, 36 NumberOfNonLiveVariables, 364 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((1 <= y && q == 0) && s == 1) && y <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((1 == cond && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == a) && b == r * y + p * x) && y <= 1) && b == y - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((1 <= y && q == 0) && r == 0) && s == 1) && 1 <= x) && b == a) && b == r * y + p * x) && y <= 1) && b == y - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((1 <= cond && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == a) && b == r * y + p * x) && y <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((1 == cond && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == a) && b == r * y + p * x) && y <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((a == x && x <= 1) && p == 1) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && y <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((1 <= cond && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == a) && b == r * y + p * x) && y <= 1) && b == y RESULT: Ultimate proved your program to be correct! [2021-10-20 05:17:49,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23b9cd59-d7a7-44df-a44d-3967912d97da/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...