./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i --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_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/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_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/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_53ba0415-7cd0-4d59-a19f-2e1da8c52013/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 e5903ff87e76f5c38f2f015436bd4a2c11a1411b3a93f272aa9f876a0a3f4d37 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:16:45,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:16:45,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:16:45,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:16:45,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:16:45,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:16:45,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:16:45,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:16:45,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:16:45,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:16:45,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:16:45,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:16:45,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:16:45,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:16:45,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:16:45,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:16:45,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:16:45,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:16:45,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:16:45,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:16:45,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:16:45,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:16:45,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:16:45,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:16:45,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:16:45,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:16:45,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:16:45,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:16:45,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:16:45,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:16:45,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:16:45,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:16:45,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:16:45,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:16:45,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:16:45,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:16:45,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:16:45,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:16:45,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:16:45,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:16:45,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:16:45,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:16:45,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:16:45,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:16:45,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:16:45,659 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:16:45,660 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:16:45,660 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:16:45,660 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:16:45,660 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:16:45,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:16:45,661 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:16:45,668 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:16:45,668 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:16:45,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:16:45,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:16:45,669 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:16:45,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:16:45,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:16:45,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:16:45,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:16:45,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:16:45,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:16:45,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:16:45,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:16:45,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:16:45,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:16:45,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:16:45,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:16:45,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:16:45,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:16:45,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:16:45,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:16:45,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:16:45,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:16:45,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:16:45,675 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:16:45,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:16:45,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:16:45,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:16:45,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:16:45,675 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_53ba0415-7cd0-4d59-a19f-2e1da8c52013/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5903ff87e76f5c38f2f015436bd4a2c11a1411b3a93f272aa9f876a0a3f4d37 [2021-10-20 05:16:45,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:16:45,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:16:45,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:16:45,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:16:45,975 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:16:45,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i [2021-10-20 05:16:46,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/data/9e4639fa7/f203f42626184174b27071b7b24e1c96/FLAG4858a08c2 [2021-10-20 05:16:46,490 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:16:46,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i [2021-10-20 05:16:46,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/data/9e4639fa7/f203f42626184174b27071b7b24e1c96/FLAG4858a08c2 [2021-10-20 05:16:46,866 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/data/9e4639fa7/f203f42626184174b27071b7b24e1c96 [2021-10-20 05:16:46,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:16:46,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:16:46,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:16:46,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:16:46,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:16:46,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:16:46" (1/1) ... [2021-10-20 05:16:46,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44972c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:46, skipping insertion in model container [2021-10-20 05:16:46,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:16:46" (1/1) ... [2021-10-20 05:16:46,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:16:46,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:16:47,079 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_53ba0415-7cd0-4d59-a19f-2e1da8c52013/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i[950,963] [2021-10-20 05:16:47,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:16:47,105 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:16:47,118 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_53ba0415-7cd0-4d59-a19f-2e1da8c52013/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i[950,963] [2021-10-20 05:16:47,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:16:47,140 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:16:47,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47 WrapperNode [2021-10-20 05:16:47,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:16:47,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:16:47,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:16:47,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:16:47,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:16:47,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:16:47,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:16:47,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:16:47,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:16:47,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:16:47,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:16:47,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:16:47,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (1/1) ... [2021-10-20 05:16:47,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:16:47,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:16:47,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:16:47,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:16:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:16:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:16:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:16:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:16:47,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:16:47,714 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-20 05:16:47,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:16:47 BoogieIcfgContainer [2021-10-20 05:16:47,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:16:47,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:16:47,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:16:47,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:16:47,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:16:46" (1/3) ... [2021-10-20 05:16:47,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43841874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:16:47, skipping insertion in model container [2021-10-20 05:16:47,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:16:47" (2/3) ... [2021-10-20 05:16:47,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43841874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:16:47, skipping insertion in model container [2021-10-20 05:16:47,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:16:47" (3/3) ... [2021-10-20 05:16:47,726 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound1.i [2021-10-20 05:16:47,736 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:16:47,753 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-20 05:16:47,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:16:47,810 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 05:16:47,810 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-20 05:16:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 05:16:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:16:47,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:16:47,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:16:47,829 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:16:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:16:47,835 INFO L82 PathProgramCache]: Analyzing trace with hash -769700853, now seen corresponding path program 1 times [2021-10-20 05:16:47,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:16:47,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076595805] [2021-10-20 05:16:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:47,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:16:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:16:47,985 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 05:16:47,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:16:47,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076595805] [2021-10-20 05:16:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076595805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:16:47,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:16:47,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:16:47,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443026000] [2021-10-20 05:16:47,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:16:47,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:16:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:16:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:16:48,012 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:16:48,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:16:48,027 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-20 05:16:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:16:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 6 [2021-10-20 05:16:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:16:48,036 INFO L225 Difference]: With dead ends: 28 [2021-10-20 05:16:48,037 INFO L226 Difference]: Without dead ends: 14 [2021-10-20 05:16:48,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:16:48,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-20 05:16:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-20 05:16:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:16:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-20 05:16:48,073 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2021-10-20 05:16:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:16:48,073 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-20 05:16:48,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:16:48,074 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-20 05:16:48,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:16:48,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:16:48,075 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:16:48,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:16:48,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:16:48,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:16:48,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1525818212, now seen corresponding path program 1 times [2021-10-20 05:16:48,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:16:48,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995297587] [2021-10-20 05:16:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:48,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:16:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:16:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:16:48,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:16:48,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995297587] [2021-10-20 05:16:48,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995297587] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:16:48,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:16:48,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:16:48,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175816329] [2021-10-20 05:16:48,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:16:48,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:16:48,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:16:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:16:48,152 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 05:16:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:16:48,173 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-10-20 05:16:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:16:48,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-20 05:16:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:16:48,174 INFO L225 Difference]: With dead ends: 26 [2021-10-20 05:16:48,175 INFO L226 Difference]: Without dead ends: 16 [2021-10-20 05:16:48,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:16:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-20 05:16:48,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-20 05:16:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 05:16:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-20 05:16:48,180 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2021-10-20 05:16:48,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:16:48,181 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-20 05:16:48,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 05:16:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-20 05:16:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:16:48,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:16:48,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:16:48,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:16:48,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:16:48,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:16:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash 104519077, now seen corresponding path program 1 times [2021-10-20 05:16:48,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:16:48,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722901452] [2021-10-20 05:16:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:48,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:16:48,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:16:48,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872347423] [2021-10-20 05:16:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:48,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:16:48,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:16:48,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:16:48,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 05:16:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:16:48,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:16:48,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:16:48,379 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 05:16:48,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:16:48,432 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 05:16:48,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:16:48,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722901452] [2021-10-20 05:16:48,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:16:48,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872347423] [2021-10-20 05:16:48,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872347423] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:16:48,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:16:48,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:16:48,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005858131] [2021-10-20 05:16:48,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:16:48,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:16:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:16:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:16:48,440 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 05:16:48,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:16:48,480 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-20 05:16:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:16:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 05:16:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:16:48,482 INFO L225 Difference]: With dead ends: 22 [2021-10-20 05:16:48,482 INFO L226 Difference]: Without dead ends: 12 [2021-10-20 05:16:48,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:16:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-20 05:16:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-20 05:16:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 05:16:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-20 05:16:48,486 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-10-20 05:16:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:16:48,486 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-20 05:16:48,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 05:16:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-20 05:16:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:16:48,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:16:48,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:16:48,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:16:48,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:16:48,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:16:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:16:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1054913563, now seen corresponding path program 1 times [2021-10-20 05:16:48,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:16:48,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258020102] [2021-10-20 05:16:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:48,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:16:48,711 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:16:48,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763133523] [2021-10-20 05:16:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:48,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:16:48,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:16:48,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:16:48,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 05:16:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:16:48,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 05:16:48,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:16:49,088 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 05:16:49,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:16:49,223 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 05:16:49,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:16:49,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258020102] [2021-10-20 05:16:49,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:16:49,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763133523] [2021-10-20 05:16:49,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763133523] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:16:49,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:16:49,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-20 05:16:49,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175899625] [2021-10-20 05:16:49,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 05:16:49,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:16:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 05:16:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:16:49,230 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 05:16:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:16:49,407 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-20 05:16:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:16:49,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 9 [2021-10-20 05:16:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:16:49,409 INFO L225 Difference]: With dead ends: 26 [2021-10-20 05:16:49,409 INFO L226 Difference]: Without dead ends: 16 [2021-10-20 05:16:49,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:16:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-20 05:16:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-20 05:16:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:16:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-20 05:16:49,413 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2021-10-20 05:16:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:16:49,413 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-20 05:16:49,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 05:16:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-20 05:16:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-20 05:16:49,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:16:49,415 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:16:49,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:16:49,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:16:49,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:16:49,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:16:49,626 INFO L82 PathProgramCache]: Analyzing trace with hash 862871494, now seen corresponding path program 1 times [2021-10-20 05:16:49,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:16:49,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306947627] [2021-10-20 05:16:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:49,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:16:49,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:16:49,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850560558] [2021-10-20 05:16:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:16:49,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:16:49,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:16:49,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:16:49,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-20 05:16:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:16:49,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:16:49,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:16:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:16:49,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:16:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:16:49,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:16:49,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306947627] [2021-10-20 05:16:49,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:16:49,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850560558] [2021-10-20 05:16:49,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850560558] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:16:49,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166442843] [2021-10-20 05:16:49,874 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-20 05:16:49,875 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 05:16:49,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 05:16:49,886 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 05:16:49,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 05:16:49,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:49,937 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:16:49,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:49,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-20 05:16:49,945 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:16:49,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:49,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 05:16:49,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-10-20 05:16:49,987 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_24|], 10=[|v_#valid_25|]} [2021-10-20 05:16:50,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:16:50,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-20 05:16:50,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-20 05:16:50,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-20 05:16:50,020 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 05:16:50,029 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 05:16:50,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 05:16:50,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 05:16:50,031 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 05:16:50,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:16:50,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:16:50,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:16:50,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:16:50,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-20 05:16:50,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:16:50,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:16:50,100 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-20 05:16:50,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,114 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-20 05:16:50,119 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 05:16:50,119 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:238, output treesize:103 [2021-10-20 05:16:50,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-20 05:16:50,135 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.3 percent of original size [2021-10-20 05:16:50,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-20 05:16:50,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-20 05:16:50,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-20 05:16:50,176 INFO L180 QuantifierPusher]: treesize reduction 120, result has 0.8 percent of original size [2021-10-20 05:16:50,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 05:16:50,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-20 05:16:50,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:16:50,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-20 05:16:50,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:50,521 INFO L180 QuantifierPusher]: treesize reduction 4, result has 96.5 percent of original size [2021-10-20 05:16:50,533 INFO L185 QuantifierPusher]: treesize reduction 36, result has 52.6 percent of original size 40 [2021-10-20 05:16:50,541 INFO L180 QuantifierPusher]: treesize reduction 36, result has 57.6 percent of original size [2021-10-20 05:16:50,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-20 05:16:50,547 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.0 percent of original size [2021-10-20 05:16:50,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-20 05:16:50,555 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 05:16:51,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:16:51,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 05:16:51,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-20 05:16:51,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069750243] [2021-10-20 05:16:51,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:16:51,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:16:51,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:16:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-20 05:16:51,946 INFO L87 Difference]: Start difference. First operand 16 states and 17 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 05:16:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:16:51,972 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-20 05:16:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:16:51,973 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 14 [2021-10-20 05:16:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:16:51,973 INFO L225 Difference]: With dead ends: 16 [2021-10-20 05:16:51,973 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:16:51,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1407.3ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-20 05:16:51,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:16:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:16:51,974 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 05:16:51,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:16:51,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-20 05:16:51,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:16:51,974 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:16:51,975 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 05:16:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:16:51,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:16:51,977 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:16:51,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:16:52,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:16:52,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:16:52,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 05:16:52,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:52,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:52,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:16:52,229 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-20 05:16:52,229 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-20 05:16:52,229 INFO L853 garLoopResultBuilder]: At program point L19-2(line 42) the Hoare annotation is: false [2021-10-20 05:16:52,229 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-20 05:16:52,229 INFO L860 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-20 05:16:52,230 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 49) no Hoare annotation was computed. [2021-10-20 05:16:52,230 INFO L857 garLoopResultBuilder]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2021-10-20 05:16:52,230 INFO L857 garLoopResultBuilder]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2021-10-20 05:16:52,230 INFO L853 garLoopResultBuilder]: At program point L36-3(lines 36 39) the Hoare annotation is: (or (and (< (mod ULTIMATE.start_main_~b~0 4294967296) 2147483647) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (= ~counter~0 0) (= ULTIMATE.start_main_~q~0 0)) (and (<= 1 ~counter~0) (= (mod (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0)) 4294967296) (mod ULTIMATE.start_main_~A~0 4294967296)))) [2021-10-20 05:16:52,230 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 05:16:52,230 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-20 05:16:52,230 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-20 05:16:52,231 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-20 05:16:52,231 INFO L857 garLoopResultBuilder]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2021-10-20 05:16:52,231 INFO L857 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-10-20 05:16:52,231 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 05:16:52,235 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:16:52,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:16:52 BoogieIcfgContainer [2021-10-20 05:16:52,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:16:52,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:16:52,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:16:52,249 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:16:52,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:16:47" (3/4) ... [2021-10-20 05:16:52,255 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:16:52,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-20 05:16:52,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-20 05:16:52,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-20 05:16:52,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:16:52,322 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:16:52,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:16:52,324 INFO L168 Benchmark]: Toolchain (without parser) took 5454.13 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 87.3 MB in the beginning and 63.7 MB in the end (delta: 23.6 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:16:52,325 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 127.9 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:16:52,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.74 ms. Allocated memory is still 127.9 MB. Free memory was 87.1 MB in the beginning and 101.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:16:52,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.99 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 100.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:16:52,326 INFO L168 Benchmark]: Boogie Preprocessor took 23.75 ms. Allocated memory is still 127.9 MB. Free memory was 100.2 MB in the beginning and 99.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:16:52,327 INFO L168 Benchmark]: RCFGBuilder took 512.65 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 84.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:16:52,327 INFO L168 Benchmark]: TraceAbstraction took 4530.11 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 84.2 MB in the beginning and 66.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:16:52,328 INFO L168 Benchmark]: Witness Printer took 73.83 ms. Allocated memory is still 155.2 MB. Free memory was 66.8 MB in the beginning and 63.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:16:52,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 127.9 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.74 ms. Allocated memory is still 127.9 MB. Free memory was 87.1 MB in the beginning and 101.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.99 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 100.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.75 ms. Allocated memory is still 127.9 MB. Free memory was 100.2 MB in the beginning and 99.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 512.65 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 84.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4530.11 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 84.2 MB in the beginning and 66.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. * Witness Printer took 73.83 ms. Allocated memory is still 155.2 MB. Free memory was 66.8 MB in the beginning and 63.7 MB in the end (delta: 3.1 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: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4434.8ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 9.4ms, AutomataDifference: 323.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 39.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 29 SDslu, 58 SDs, 0 SdLazy, 41 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1520.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 33 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 30.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.4ms SsaConstructionTime, 111.6ms SatisfiabilityAnalysisTime, 755.0ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 286 SizeOfPredicates, 8 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 12/14 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 2 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((b % 4294967296 < 2147483647 && A == r) && counter == 0) && q == 0) || (1 <= counter && (r + q * b) % 4294967296 == A % 4294967296) RESULT: Ultimate proved your program to be correct! [2021-10-20 05:16:52,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba0415-7cd0-4d59-a19f-2e1da8c52013/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...