./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7 --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 87608ec580cc80a59c7836f9aeadd0fc773dea5ebb620dd020651936daa4e397 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:42:33,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:42:33,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:42:33,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:42:33,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:42:33,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:42:33,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:42:33,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:42:33,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:42:33,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:42:33,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:42:33,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:42:33,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:42:33,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:42:33,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:42:33,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:42:33,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:42:33,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:42:33,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:42:33,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:42:33,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:42:33,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:42:33,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:42:33,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:42:33,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:42:33,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:42:33,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:42:33,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:42:33,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:42:33,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:42:33,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:42:33,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:42:33,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:42:33,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:42:33,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:42:33,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:42:33,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:42:33,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:42:33,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:42:33,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:42:33,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:42:33,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:42:33,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:42:33,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:42:33,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:42:33,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:42:33,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:42:33,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:42:33,808 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:42:33,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:42:33,808 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:42:33,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:42:33,809 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:42:33,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:42:33,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:42:33,810 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:42:33,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:42:33,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:42:33,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:42:33,811 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:42:33,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:42:33,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:42:33,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:42:33,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:42:33,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:42:33,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:42:33,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:42:33,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:42:33,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:42:33,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:42:33,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:42:33,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:42:33,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:42:33,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:42:33,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:42:33,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:42:33,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:42:33,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:42:33,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:42:33,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:42:33,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:42:33,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:42:33,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:42:33,817 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_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87608ec580cc80a59c7836f9aeadd0fc773dea5ebb620dd020651936daa4e397 [2021-11-25 19:42:34,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:42:34,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:42:34,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:42:34,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:42:34,215 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:42:34,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2021-11-25 19:42:34,284 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/data/7a77838e9/56b8516d119b400ebc62690bb9986834/FLAG5a76419ab [2021-11-25 19:42:34,762 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:42:34,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2021-11-25 19:42:34,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/data/7a77838e9/56b8516d119b400ebc62690bb9986834/FLAG5a76419ab [2021-11-25 19:42:35,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/data/7a77838e9/56b8516d119b400ebc62690bb9986834 [2021-11-25 19:42:35,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:42:35,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:42:35,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:42:35,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:42:35,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:42:35,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32388383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35, skipping insertion in model container [2021-11-25 19:42:35,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:42:35,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:42:35,419 WARN L230 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_33c870b5-9482-4e7c-922f-955688c74706/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2021-11-25 19:42:35,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:42:35,445 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:42:35,458 WARN L230 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_33c870b5-9482-4e7c-922f-955688c74706/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2021-11-25 19:42:35,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:42:35,481 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:42:35,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35 WrapperNode [2021-11-25 19:42:35,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:42:35,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:42:35,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:42:35,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:42:35,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,516 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2021-11-25 19:42:35,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:42:35,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:42:35,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:42:35,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:42:35,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:42:35,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:42:35,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:42:35,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:42:35,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (1/1) ... [2021-11-25 19:42:35,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:42:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:35,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:42:35,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:42:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:42:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:42:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:42:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:42:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:42:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:42:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:42:35,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:42:35,730 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:42:35,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:42:35,910 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:42:35,946 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:42:35,947 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:42:35,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:35 BoogieIcfgContainer [2021-11-25 19:42:35,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:42:35,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:42:35,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:42:35,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:42:35,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:42:35" (1/3) ... [2021-11-25 19:42:35,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb04ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:42:35, skipping insertion in model container [2021-11-25 19:42:35,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:35" (2/3) ... [2021-11-25 19:42:35,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb04ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:42:35, skipping insertion in model container [2021-11-25 19:42:35,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:35" (3/3) ... [2021-11-25 19:42:35,974 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound1.c [2021-11-25 19:42:35,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:42:35,979 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:42:36,084 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:42:36,109 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 [2021-11-25 19:42:36,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:42:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:42:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:42:36,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:36,135 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:36,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:36,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2113922188, now seen corresponding path program 1 times [2021-11-25 19:42:36,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:36,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374195940] [2021-11-25 19:42:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:36,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:42:36,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:36,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374195940] [2021-11-25 19:42:36,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374195940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:36,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:36,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:42:36,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233101312] [2021-11-25 19:42:36,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:36,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:42:36,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:42:36,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:42:36,366 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:42:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:36,402 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2021-11-25 19:42:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:42:36,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-25 19:42:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:36,414 INFO L225 Difference]: With dead ends: 32 [2021-11-25 19:42:36,414 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 19:42:36,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:42:36,423 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:36,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:42:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 19:42:36,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 19:42:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:42:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-25 19:42:36,466 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2021-11-25 19:42:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:36,467 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-25 19:42:36,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:42:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-25 19:42:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:42:36,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:36,470 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:36,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:42:36,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:36,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2066763035, now seen corresponding path program 1 times [2021-11-25 19:42:36,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:36,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253464419] [2021-11-25 19:42:36,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:36,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:36,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:42:36,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942988762] [2021-11-25 19:42:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:36,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:36,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:36,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:42:36,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:42:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:42:36,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:42:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:42:36,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:42:36,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253464419] [2021-11-25 19:42:36,748 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:42:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942988762] [2021-11-25 19:42:36,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942988762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:36,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:36,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:42:36,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430096617] [2021-11-25 19:42:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:36,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:42:36,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:42:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:36,757 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:42:36,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:36,930 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-11-25 19:42:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:42:36,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-25 19:42:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:36,932 INFO L225 Difference]: With dead ends: 28 [2021-11-25 19:42:36,932 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 19:42:36,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:42:36,935 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:36,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:42:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 19:42:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 19:42:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:42:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-25 19:42:36,949 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2021-11-25 19:42:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:36,949 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-25 19:42:36,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:42:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-25 19:42:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:42:36,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:36,951 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:36,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:42:37,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:37,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1985624712, now seen corresponding path program 1 times [2021-11-25 19:42:37,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:37,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696129928] [2021-11-25 19:42:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:37,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:37,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:42:37,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031360452] [2021-11-25 19:42:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:37,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:37,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:37,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:42:37,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:42:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:37,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:42:37,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:42:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:42:37,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:42:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:42:38,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:38,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696129928] [2021-11-25 19:42:38,088 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:42:38,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031360452] [2021-11-25 19:42:38,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031360452] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:42:38,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:42:38,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-11-25 19:42:38,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765663409] [2021-11-25 19:42:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:38,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:42:38,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:42:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:42:38,092 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:42:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:38,149 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-25 19:42:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:42:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-11-25 19:42:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:38,151 INFO L225 Difference]: With dead ends: 30 [2021-11-25 19:42:38,151 INFO L226 Difference]: Without dead ends: 26 [2021-11-25 19:42:38,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:42:38,153 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:38,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:42:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-25 19:42:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-25 19:42:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:42:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-11-25 19:42:38,164 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2021-11-25 19:42:38,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:38,165 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-11-25 19:42:38,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:42:38,165 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-11-25 19:42:38,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 19:42:38,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:38,167 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:38,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:42:38,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:38,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1002189902, now seen corresponding path program 1 times [2021-11-25 19:42:38,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:38,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658291633] [2021-11-25 19:42:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:38,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:38,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:42:38,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416724483] [2021-11-25 19:42:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:38,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:38,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:38,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:42:38,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:42:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:38,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:42:38,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:42:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:42:38,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:42:39,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658291633] [2021-11-25 19:42:39,422 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:42:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416724483] [2021-11-25 19:42:39,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416724483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:42:39,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [300623347] [2021-11-25 19:42:39,448 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-25 19:42:39,449 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:42:39,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:42:39,459 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:42:39,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:42:41,479 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2021-11-25 19:42:41,490 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 74 for LOIs [2021-11-25 19:42:41,527 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:42:43,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '577#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:42:43,455 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:42:43,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:42:43,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-25 19:42:43,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357624683] [2021-11-25 19:42:43,456 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:42:43,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:42:43,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:42:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:42:43,458 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 19:42:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:43,664 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-11-25 19:42:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:42:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 31 [2021-11-25 19:42:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:43,668 INFO L225 Difference]: With dead ends: 39 [2021-11-25 19:42:43,669 INFO L226 Difference]: Without dead ends: 33 [2021-11-25 19:42:43,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:42:43,671 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:43,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 96 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:42:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-25 19:42:43,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-25 19:42:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:42:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-25 19:42:43,688 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2021-11-25 19:42:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:43,689 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-25 19:42:43,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 19:42:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-25 19:42:43,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:42:43,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:43,693 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:43,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:42:43,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:43,917 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -180873249, now seen corresponding path program 2 times [2021-11-25 19:42:43,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:43,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429432750] [2021-11-25 19:42:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:43,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:43,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:42:43,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532055512] [2021-11-25 19:42:43,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:42:43,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:43,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:43,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:42:43,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:42:44,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:42:44,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:42:44,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:42:44,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:42:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:42:44,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:42:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 19:42:44,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:44,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429432750] [2021-11-25 19:42:44,433 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:42:44,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532055512] [2021-11-25 19:42:44,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532055512] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:42:44,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591607719] [2021-11-25 19:42:44,437 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-25 19:42:44,437 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:42:44,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:42:44,438 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:42:44,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:42:45,841 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2021-11-25 19:42:45,850 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 74 for LOIs [2021-11-25 19:42:45,879 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:42:47,202 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '929#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:42:47,202 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:42:47,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:42:47,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-25 19:42:47,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824272914] [2021-11-25 19:42:47,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:42:47,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:42:47,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:42:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:42:47,205 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2021-11-25 19:42:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:47,256 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-11-25 19:42:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:42:47,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Word has length 38 [2021-11-25 19:42:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:47,260 INFO L225 Difference]: With dead ends: 34 [2021-11-25 19:42:47,260 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:42:47,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:42:47,267 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:47,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:42:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:42:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:42:47,273 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) [2021-11-25 19:42:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:42:47,273 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-11-25 19:42:47,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:47,273 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:42:47,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2021-11-25 19:42:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:42:47,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:42:47,275 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:42:47,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:42:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:47,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:42:47,675 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:42:47,676 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~k~0#1| 1))) (or (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|)))) [2021-11-25 19:42:47,676 INFO L858 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2021-11-25 19:42:47,676 INFO L861 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2021-11-25 19:42:47,676 INFO L854 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1)) [2021-11-25 19:42:47,676 INFO L861 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: true [2021-11-25 19:42:47,676 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:42:47,676 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~k~0#1| 1))) (or (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|)))) [2021-11-25 19:42:47,677 INFO L854 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and (<= |ULTIMATE.start_main_~k~0#1| 1) (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|))) [2021-11-25 19:42:47,677 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-11-25 19:42:47,677 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and (<= |ULTIMATE.start_main_~k~0#1| 1) (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|))) [2021-11-25 19:42:47,677 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2021-11-25 19:42:47,677 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-11-25 19:42:47,677 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2021-11-25 19:42:47,677 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-11-25 19:42:47,678 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-11-25 19:42:47,678 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2021-11-25 19:42:47,678 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2021-11-25 19:42:47,678 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-25 19:42:47,681 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-11-25 19:42:47,683 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:42:47,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:42:47 BoogieIcfgContainer [2021-11-25 19:42:47,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:42:47,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:42:47,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:42:47,708 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:42:47,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:35" (3/4) ... [2021-11-25 19:42:47,711 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:42:47,717 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-25 19:42:47,718 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 19:42:47,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-25 19:42:47,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-25 19:42:47,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 19:42:47,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:42:47,766 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:42:47,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:42:47,773 INFO L158 Benchmark]: Toolchain (without parser) took 12645.06ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 73.3MB in the beginning and 76.2MB in the end (delta: -2.9MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2021-11-25 19:42:47,773 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:42:47,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.02ms. Allocated memory is still 115.3MB. Free memory was 73.1MB in the beginning and 89.2MB in the end (delta: -16.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:42:47,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.15ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 87.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:42:47,776 INFO L158 Benchmark]: Boogie Preprocessor took 22.22ms. Allocated memory is still 115.3MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:42:47,777 INFO L158 Benchmark]: RCFGBuilder took 424.93ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 76.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:42:47,777 INFO L158 Benchmark]: TraceAbstraction took 11739.57ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 75.8MB in the beginning and 79.4MB in the end (delta: -3.6MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2021-11-25 19:42:47,778 INFO L158 Benchmark]: Witness Printer took 64.41ms. Allocated memory is still 146.8MB. Free memory was 79.4MB in the beginning and 76.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:42:47,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.02ms. Allocated memory is still 115.3MB. Free memory was 73.1MB in the beginning and 89.2MB in the end (delta: -16.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.15ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 87.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.22ms. Allocated memory is still 115.3MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.93ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 76.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11739.57ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 75.8MB in the beginning and 79.4MB in the end (delta: -3.6MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * Witness Printer took 64.41ms. Allocated memory is still 146.8MB. Free memory was 79.4MB in the beginning and 76.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 208 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 203 IncrementalHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 72 mSDtfsCounter, 203 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 16 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 30 NumberOfFragments, 251 HoareAnnotationTreeSize, 21 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 98 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 600 SizeOfPredicates, 7 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 117/125 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((0 <= k && c == 0) && k <= 1) && y == 0) && x == 0) || (((((k <= 1 && 12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y)) && c <= 1) && 1 <= c) && y == 1) && 0 < k) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-25 19:42:47,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c870b5-9482-4e7c-922f-955688c74706/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE