./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur --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 bc74c1b33e1074c3a5a06ad6eff1da469d2065c9f566ce661be4cc84c215be29 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:46:42,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:46:42,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:46:42,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:46:42,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:46:42,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:46:42,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:46:42,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:46:42,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:46:42,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:46:42,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:46:42,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:46:42,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:46:42,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:46:42,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:46:42,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:46:42,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:46:42,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:46:42,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:46:42,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:46:42,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:46:42,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:46:42,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:46:42,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:46:42,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:46:42,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:46:42,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:46:42,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:46:42,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:46:42,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:46:42,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:46:42,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:46:42,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:46:42,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:46:42,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:46:42,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:46:42,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:46:42,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:46:42,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:46:42,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:46:42,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:46:42,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:46:42,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:46:42,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:46:42,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:46:42,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:46:42,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:46:42,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:46:42,706 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:46:42,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:46:42,706 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:46:42,706 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:46:42,706 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:46:42,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:46:42,707 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:46:42,707 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:46:42,707 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:46:42,707 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:46:42,708 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:46:42,708 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:46:42,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:46:42,709 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:46:42,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:46:42,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:46:42,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:46:42,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:46:42,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:46:42,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:46:42,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:46:42,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:46:42,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:46:42,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:46:42,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:46:42,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:46:42,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:46:42,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:46:42,712 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:46:42,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:46:42,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:46:42,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:46:42,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:46:42,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:46:42,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:46:42,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc74c1b33e1074c3a5a06ad6eff1da469d2065c9f566ce661be4cc84c215be29 [2022-11-25 23:46:42,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:46:42,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:46:42,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:46:42,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:46:42,968 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:46:42,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c [2022-11-25 23:46:46,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:46:46,373 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:46:46,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c [2022-11-25 23:46:46,383 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/data/7aca68f79/158772cefec54e399b9da7270dcf56aa/FLAGd9e289bb3 [2022-11-25 23:46:46,396 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/data/7aca68f79/158772cefec54e399b9da7270dcf56aa [2022-11-25 23:46:46,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:46:46,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:46:46,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:46:46,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:46:46,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:46:46,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e373dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46, skipping insertion in model container [2022-11-25 23:46:46,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:46:46,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:46:46,576 WARN L237 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_7110f669-79cd-47bd-9c64-c65be4ca6a7c/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c[546,559] [2022-11-25 23:46:46,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:46:46,600 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:46:46,612 WARN L237 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_7110f669-79cd-47bd-9c64-c65be4ca6a7c/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c[546,559] [2022-11-25 23:46:46,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:46:46,628 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:46:46,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46 WrapperNode [2022-11-25 23:46:46,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:46:46,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:46:46,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:46:46,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:46:46,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,658 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-11-25 23:46:46,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:46:46,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:46:46,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:46:46,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:46:46,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,676 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:46:46,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:46:46,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:46:46,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:46:46,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (1/1) ... [2022-11-25 23:46:46,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:46:46,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:46,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:46:46,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:46:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:46:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:46:46,767 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:46:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:46:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:46:46,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:46:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:46:46,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:46:46,830 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:46:46,832 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:46:46,955 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:46:46,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:46:46,999 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:46:47,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:46:47 BoogieIcfgContainer [2022-11-25 23:46:47,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:46:47,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:46:47,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:46:47,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:46:47,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:46:46" (1/3) ... [2022-11-25 23:46:47,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff83c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:46:47, skipping insertion in model container [2022-11-25 23:46:47,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:46" (2/3) ... [2022-11-25 23:46:47,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff83c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:46:47, skipping insertion in model container [2022-11-25 23:46:47,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:46:47" (3/3) ... [2022-11-25 23:46:47,012 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound1.c [2022-11-25 23:46:47,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:46:47,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:46:47,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:46:47,093 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31dd9a14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:46:47,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:46:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:46:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:46:47,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:47,104 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:47,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:47,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1517355578, now seen corresponding path program 1 times [2022-11-25 23:46:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:47,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104412919] [2022-11-25 23:46:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:47,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:47,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:47,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104412919] [2022-11-25 23:46:47,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 23:46:47,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388021015] [2022-11-25 23:46:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:47,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:47,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:47,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:46:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:47,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 23:46:47,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:47,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:46:47,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388021015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:47,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:47,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:46:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747854951] [2022-11-25 23:46:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:47,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:46:47,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:46:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:46:47,472 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-25 23:46:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:47,523 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2022-11-25 23:46:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:46:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14 [2022-11-25 23:46:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:47,539 INFO L225 Difference]: With dead ends: 34 [2022-11-25 23:46:47,543 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 23:46:47,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:46:47,550 INFO L413 NwaCegarLoop]: 20 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, 20 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 [2022-11-25 23:46:47,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:46:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 23:46:47,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 23:46:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:46:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-25 23:46:47,601 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 14 [2022-11-25 23:46:47,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:47,603 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-25 23:46:47,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-25 23:46:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-25 23:46:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:46:47,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:47,605 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:47,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:46:47,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 23:46:47,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1135881823, now seen corresponding path program 1 times [2022-11-25 23:46:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:47,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784589823] [2022-11-25 23:46:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:47,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:47,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:46:47,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875980989] [2022-11-25 23:46:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:47,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:47,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:47,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:47,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:46:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:47,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 23:46:47,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:46:48,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:46:48,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:48,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784589823] [2022-11-25 23:46:48,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:46:48,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875980989] [2022-11-25 23:46:48,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875980989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:48,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:48,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:46:48,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068942828] [2022-11-25 23:46:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:48,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:46:48,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:46:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:46:48,043 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 23:46:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:48,115 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-25 23:46:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:46:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-25 23:46:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:48,117 INFO L225 Difference]: With dead ends: 29 [2022-11-25 23:46:48,117 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 23:46:48,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:46:48,119 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:48,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:46:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 23:46:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-11-25 23:46:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:46:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-25 23:46:48,128 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2022-11-25 23:46:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:48,129 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-25 23:46:48,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 23:46:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-25 23:46:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 23:46:48,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:48,130 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:48,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:46:48,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:48,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:48,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash 769061280, now seen corresponding path program 1 times [2022-11-25 23:46:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:48,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933703412] [2022-11-25 23:46:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:48,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:48,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:46:48,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704263655] [2022-11-25 23:46:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:48,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:48,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:48,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:46:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:48,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:46:48,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:48,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:46:48,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:48,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933703412] [2022-11-25 23:46:48,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:46:48,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704263655] [2022-11-25 23:46:48,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704263655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:48,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:48,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:46:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537690736] [2022-11-25 23:46:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:48,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:46:48,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:46:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:46:48,463 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 23:46:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:48,496 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-25 23:46:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:46:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 15 [2022-11-25 23:46:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:48,501 INFO L225 Difference]: With dead ends: 33 [2022-11-25 23:46:48,501 INFO L226 Difference]: Without dead ends: 25 [2022-11-25 23:46:48,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:46:48,503 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:48,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:46:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-25 23:46:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-25 23:46:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:46:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-25 23:46:48,510 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 15 [2022-11-25 23:46:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:48,510 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-25 23:46:48,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 23:46:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-25 23:46:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 23:46:48,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:48,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:48,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 23:46:48,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:48,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1485105903, now seen corresponding path program 1 times [2022-11-25 23:46:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:48,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444757254] [2022-11-25 23:46:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:48,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:46:48,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117262022] [2022-11-25 23:46:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:48,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:48,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:48,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:46:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:48,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:46:48,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:48,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:46:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:49,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:49,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444757254] [2022-11-25 23:46:49,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:46:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117262022] [2022-11-25 23:46:49,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117262022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:46:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1924708876] [2022-11-25 23:46:49,073 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-25 23:46:49,073 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:46:49,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:46:49,082 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:46:49,083 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:46:49,612 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-25 23:46:49,628 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2022-11-25 23:46:49,678 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:46:51,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1924708876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:51,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:46:51,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8, 7] total 23 [2022-11-25 23:46:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958833778] [2022-11-25 23:46:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:51,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:46:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:46:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:46:51,322 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:46:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:51,541 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-11-25 23:46:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:46:51,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2022-11-25 23:46:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:51,543 INFO L225 Difference]: With dead ends: 34 [2022-11-25 23:46:51,543 INFO L226 Difference]: Without dead ends: 26 [2022-11-25 23:46:51,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:46:51,544 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:51,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:46:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-25 23:46:51,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-25 23:46:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:46:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-25 23:46:51,555 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2022-11-25 23:46:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:51,556 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-25 23:46:51,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:46:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-25 23:46:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 23:46:51,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:51,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:51,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:46:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:51,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash 101792437, now seen corresponding path program 1 times [2022-11-25 23:46:51,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:51,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147460849] [2022-11-25 23:46:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:51,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:51,778 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:46:51,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978203278] [2022-11-25 23:46:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:51,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:51,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:51,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:51,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:46:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:51,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:46:51,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:51,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:46:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:51,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:51,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147460849] [2022-11-25 23:46:51,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:46:51,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978203278] [2022-11-25 23:46:51,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978203278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:46:51,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2090656591] [2022-11-25 23:46:51,918 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-25 23:46:51,918 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:46:51,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:46:51,918 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:46:51,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:46:52,370 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-25 23:46:52,382 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2022-11-25 23:46:52,417 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:46:53,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2090656591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:53,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:46:53,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 5] total 15 [2022-11-25 23:46:53,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129565795] [2022-11-25 23:46:53,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:53,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:46:53,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:46:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:46:53,844 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:46:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:54,378 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-11-25 23:46:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:46:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2022-11-25 23:46:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:54,380 INFO L225 Difference]: With dead ends: 33 [2022-11-25 23:46:54,380 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 23:46:54,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:46:54,382 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:54,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:46:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 23:46:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-25 23:46:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:46:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-11-25 23:46:54,392 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2022-11-25 23:46:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:54,392 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-11-25 23:46:54,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:46:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-11-25 23:46:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 23:46:54,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:54,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:54,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:46:54,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:54,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1222938614, now seen corresponding path program 1 times [2022-11-25 23:46:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:54,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452249690] [2022-11-25 23:46:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:54,615 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:46:54,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072105235] [2022-11-25 23:46:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:54,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:54,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:54,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:54,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:46:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:54,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 23:46:54,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:46:54,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:46:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:55,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:55,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452249690] [2022-11-25 23:46:55,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:46:55,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072105235] [2022-11-25 23:46:55,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072105235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:46:55,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2128313970] [2022-11-25 23:46:55,078 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-25 23:46:55,078 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:46:55,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:46:55,079 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:46:55,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:46:55,465 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 58 for LOIs [2022-11-25 23:46:55,507 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2022-11-25 23:46:55,540 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:46:57,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2128313970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:57,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:46:57,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11, 8] total 28 [2022-11-25 23:46:57,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747067892] [2022-11-25 23:46:57,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:57,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:46:57,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:57,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:46:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-11-25 23:46:57,990 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:46:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:58,596 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-11-25 23:46:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:46:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2022-11-25 23:46:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:58,602 INFO L225 Difference]: With dead ends: 34 [2022-11-25 23:46:58,602 INFO L226 Difference]: Without dead ends: 28 [2022-11-25 23:46:58,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2022-11-25 23:46:58,603 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:58,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 37 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:46:58,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-25 23:46:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-25 23:46:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 23:46:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-25 23:46:58,612 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2022-11-25 23:46:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:58,612 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-25 23:46:58,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:46:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-25 23:46:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 23:46:58,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:58,614 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:58,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 23:46:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:46:58,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash 390558169, now seen corresponding path program 1 times [2022-11-25 23:46:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:58,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494566520] [2022-11-25 23:46:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:58,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:58,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:46:58,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160721087] [2022-11-25 23:46:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:58,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:58,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:58,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:46:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:58,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:46:58,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:46:58,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:46:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:46:58,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494566520] [2022-11-25 23:46:58,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:46:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160721087] [2022-11-25 23:46:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160721087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:46:58,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1557731482] [2022-11-25 23:46:58,953 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-25 23:46:58,954 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:46:58,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:46:58,954 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:46:58,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:46:59,355 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-25 23:46:59,368 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2022-11-25 23:46:59,399 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:47:01,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1557731482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:01,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:47:01,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 5] total 17 [2022-11-25 23:47:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803080938] [2022-11-25 23:47:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:01,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:47:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:01,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:47:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:47:01,177 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:01,689 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-11-25 23:47:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:47:01,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-11-25 23:47:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:01,694 INFO L225 Difference]: With dead ends: 28 [2022-11-25 23:47:01,694 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:47:01,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:47:01,696 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:01,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:47:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:47:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:47:01,699 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) [2022-11-25 23:47:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:47:01,699 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-11-25 23:47:01,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:01,701 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:47:01,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:47:01,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:47:01,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:47:01,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:01,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:01,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:47:02,559 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:47:02,559 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse15 (select |#memory_int| 1))) (let ((.cse0 (not (= (ite (<= 1 |ULTIMATE.start_main_~z~0#1|) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= |ULTIMATE.start_main_~z~0#1| 2147483647)) (.cse3 (= 2 (select |#length| 1))) (.cse4 (<= |ULTIMATE.start_main_~k~0#1| 2147483647)) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (= (select |#valid| 2) 1)) (.cse9 (= |#NULL.offset| 0)) (.cse10 (= (select .cse15 0) 48)) (.cse11 (= 10 (select |#length| 2))) (.cse12 (= (select .cse15 1) 0)) (.cse13 (< 0 |#StackHeapBarrier|)) (.cse14 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) .cse3 .cse4 .cse5 (< 1 |ULTIMATE.start_main_~k~0#1|) .cse6 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) .cse7 .cse8 .cse9 .cse10 (= ~counter~0 1) .cse11 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse12 .cse13 .cse14) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~c~0#1| 1) .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~x~0#1| 1) (= ~counter~0 0) .cse6 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~k~0#1|) 1 0))) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14)))) [2022-11-25 23:47:02,559 INFO L899 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2022-11-25 23:47:02,560 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-25 23:47:02,560 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (<= 1 |ULTIMATE.start_main_~z~0#1|) 1 0) 0)) (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (= |ULTIMATE.start_main_~c~0#1| 1) (= 2 (select |#length| 1)) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= (select |#valid| 1) 1) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~k~0#1|) 1 0))) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= ~counter~0 1) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:47:02,560 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 45) no Hoare annotation was computed. [2022-11-25 23:47:02,560 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:47:02,560 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (= 2 (select |#length| 1)) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= (select |#valid| 3) 1) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:47:02,560 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (<= 1 |ULTIMATE.start_main_~z~0#1|) 1 0) 0)) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (= 2 (select |#length| 1)) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= (select |#valid| 3) 1) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 23:47:02,561 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse15 (select |#memory_int| 1))) (let ((.cse0 (not (= (ite (<= 1 |ULTIMATE.start_main_~z~0#1|) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= 2 (select |#length| 1))) (.cse3 (= (select |#valid| 3) 1)) (.cse4 (= (select |#valid| 1) 1)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| 2) 1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (= (select .cse15 0) 48)) (.cse10 (= 10 (select |#length| 2))) (.cse11 (= (select .cse15 1) 0)) (.cse5 (+ |ULTIMATE.start_main_~x~0#1| 1)) (.cse12 (< 0 |#StackHeapBarrier|)) (.cse13 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~k~0#1|) 1 0))) (= |ULTIMATE.start_main_~z~0#1| .cse5) .cse6 .cse7 .cse8 .cse9 (= ~counter~0 1) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) .cse10 (not (= (ite (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 1 0) 0)) .cse11 (not (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) .cse12 .cse13) (let ((.cse14 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| .cse14) .cse2 (<= |ULTIMATE.start_main_~k~0#1| 2147483647) .cse3 .cse4 (< |ULTIMATE.start_main_~c~0#1| (+ |ULTIMATE.start_main_~k~0#1| 1)) .cse6 .cse7 .cse8 .cse9 .cse10 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse11 (= ~counter~0 2) (= .cse5 .cse14) .cse12 .cse13))))) [2022-11-25 23:47:02,561 INFO L902 garLoopResultBuilder]: At program point L49-1(line 49) the Hoare annotation is: true [2022-11-25 23:47:02,561 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2022-11-25 23:47:02,561 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-11-25 23:47:02,562 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2022-11-25 23:47:02,563 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2022-11-25 23:47:02,563 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2022-11-25 23:47:02,563 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-11-25 23:47:02,563 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2022-11-25 23:47:02,563 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2022-11-25 23:47:02,563 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2022-11-25 23:47:02,568 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:02,570 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:47:02,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:47:02 BoogieIcfgContainer [2022-11-25 23:47:02,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:47:02,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:47:02,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:47:02,616 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:47:02,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:46:47" (3/4) ... [2022-11-25 23:47:02,620 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:47:02,625 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-25 23:47:02,628 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-25 23:47:02,632 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-25 23:47:02,633 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-25 23:47:02,634 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 23:47:02,634 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:47:02,676 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:47:02,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:47:02,677 INFO L158 Benchmark]: Toolchain (without parser) took 16271.24ms. Allocated memory was 146.8MB in the beginning and 232.8MB in the end (delta: 86.0MB). Free memory was 98.9MB in the beginning and 73.6MB in the end (delta: 25.3MB). Peak memory consumption was 113.9MB. Max. memory is 16.1GB. [2022-11-25 23:47:02,677 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 146.8MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:47:02,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.25ms. Allocated memory is still 146.8MB. Free memory was 98.9MB in the beginning and 88.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:47:02,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.46ms. Allocated memory is still 146.8MB. Free memory was 88.5MB in the beginning and 87.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:47:02,678 INFO L158 Benchmark]: Boogie Preprocessor took 18.69ms. Allocated memory is still 146.8MB. Free memory was 87.2MB in the beginning and 86.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:47:02,679 INFO L158 Benchmark]: RCFGBuilder took 323.53ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 86.0MB in the beginning and 164.1MB in the end (delta: -78.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-11-25 23:47:02,680 INFO L158 Benchmark]: TraceAbstraction took 15610.75ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 163.5MB in the beginning and 75.7MB in the end (delta: 87.8MB). Peak memory consumption was 127.8MB. Max. memory is 16.1GB. [2022-11-25 23:47:02,680 INFO L158 Benchmark]: Witness Printer took 60.27ms. Allocated memory is still 232.8MB. Free memory was 75.7MB in the beginning and 73.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:47:02,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 146.8MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.25ms. Allocated memory is still 146.8MB. Free memory was 98.9MB in the beginning and 88.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.46ms. Allocated memory is still 146.8MB. Free memory was 88.5MB in the beginning and 87.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.69ms. Allocated memory is still 146.8MB. Free memory was 87.2MB in the beginning and 86.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 323.53ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 86.0MB in the beginning and 164.1MB in the end (delta: -78.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15610.75ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 163.5MB in the beginning and 75.7MB in the end (delta: 87.8MB). Peak memory consumption was 127.8MB. Max. memory is 16.1GB. * Witness Printer took 60.27ms. Allocated memory is still 232.8MB. Free memory was 75.7MB in the beginning and 73.6MB in the end (delta: 2.1MB). 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: 18]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.5s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 263 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 79 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 214 SyntacticMatches, 22 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, InterpolantAutomatonStates: 72, 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, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 22 NumberOfFragments, 649 HoareAnnotationTreeSize, 16 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1244 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 222 ConstructedInterpolants, 2 QuantifiedInterpolants, 626 SizeOfPredicates, 13 NumberOfNonLiveVariables, 558 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 58/68 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: OVERALL_TIME: 2.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 72, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 76, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 51, TOOLS_POST_CALL_TIME: 0.8s, TOOLS_POST_RETURN_APPLICATIONS: 36, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 163, TOOLS_QUANTIFIERELIM_TIME: 1.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 232, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 43, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 72, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 0.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 36, CALL_SUMMARIZER_CACHE_MISSES: 8, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 606, DAG_COMPRESSION_RETAINED_NODES: 224, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((((((!((if 1 <= z then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && z <= 2147483647) && y == z * z) && 2 == unknown-#length-unknown[1]) && k <= 2147483647) && \valid[3] == 1) && 1 < k) && \valid[1] == 1) && x == z + 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && counter == 1) && 10 == unknown-#length-unknown[2]) && 2 == c) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((!((if 1 <= z then 1 else 0) == 0) && y == z) && unknown-#length-unknown[3] == 12) && z <= 2147483647) && c == 1) && 2 == unknown-#length-unknown[1]) && k <= 2147483647) && \valid[3] == 1) && x == 1) && counter == 0) && \valid[1] == 1) && !(0 == (if 1 <= k then 1 else 0))) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 10 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-25 23:47:02,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7110f669-79cd-47bd-9c64-c65be4ca6a7c/bin/utaipan-ByfvJB40ur/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