./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh --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 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a --- 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-2329fc7 [2022-12-14 06:29:35,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:29:35,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:29:35,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:29:35,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:29:35,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:29:35,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:29:35,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:29:35,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:29:35,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:29:35,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:29:35,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:29:35,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:29:35,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:29:35,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:29:35,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:29:35,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:29:35,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:29:35,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:29:35,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:29:35,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:29:35,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:29:35,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:29:35,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:29:35,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:29:35,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:29:35,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:29:35,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:29:35,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:29:35,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:29:35,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:29:35,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:29:35,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:29:35,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:29:35,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:29:35,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:29:35,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:29:35,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:29:35,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:29:35,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:29:35,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:29:35,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:29:35,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:29:35,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:29:35,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:29:35,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:29:35,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:29:35,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:29:35,674 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:29:35,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:29:35,675 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:29:35,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:29:35,675 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:29:35,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:29:35,675 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:29:35,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:29:35,676 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:29:35,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:29:35,676 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:29:35,676 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:29:35,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:29:35,677 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:29:35,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:29:35,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:29:35,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:29:35,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:29:35,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:29:35,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:29:35,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:29:35,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:29:35,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:29:35,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:29:35,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:29:35,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:29:35,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:29:35,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:29:35,679 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:29:35,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:29:35,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:29:35,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:29:35,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:29:35,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:29:35,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:29:35,680 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_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a [2022-12-14 06:29:35,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:29:35,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:29:35,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:29:35,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:29:35,918 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:29:35,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-12-14 06:29:38,587 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:29:38,758 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:29:38,758 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-12-14 06:29:38,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/data/169b24bea/837484eff3e04b00b7110c13fef97db2/FLAG89e44aa69 [2022-12-14 06:29:38,773 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/data/169b24bea/837484eff3e04b00b7110c13fef97db2 [2022-12-14 06:29:38,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:29:38,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:29:38,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:29:38,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:29:38,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:29:38,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:38,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc7f472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38, skipping insertion in model container [2022-12-14 06:29:38,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:38,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:29:38,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:29:38,932 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_cedfa8df-75d3-4779-a617-922d1f5550f8/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-12-14 06:29:38,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:29:38,959 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:29:38,968 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_cedfa8df-75d3-4779-a617-922d1f5550f8/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-12-14 06:29:38,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:29:38,985 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:29:38,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38 WrapperNode [2022-12-14 06:29:38,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:29:38,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:29:38,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:29:38,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:29:38,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:38,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,010 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-12-14 06:29:39,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:29:39,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:29:39,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:29:39,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:29:39,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:29:39,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:29:39,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:29:39,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:29:39,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (1/1) ... [2022-12-14 06:29:39,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:29:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:29:39,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:29:39,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:29:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:29:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:29:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:29:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:29:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 06:29:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 06:29:39,144 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:29:39,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:29:39,272 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:29:39,303 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:29:39,303 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:29:39,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:29:39 BoogieIcfgContainer [2022-12-14 06:29:39,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:29:39,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:29:39,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:29:39,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:29:39,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:29:38" (1/3) ... [2022-12-14 06:29:39,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dec7da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:29:39, skipping insertion in model container [2022-12-14 06:29:39,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:29:38" (2/3) ... [2022-12-14 06:29:39,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dec7da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:29:39, skipping insertion in model container [2022-12-14 06:29:39,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:29:39" (3/3) ... [2022-12-14 06:29:39,313 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2022-12-14 06:29:39,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:29:39,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:29:39,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:29:39,382 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;@59ecdab1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:29:39,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:29:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:29:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 06:29:39,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:29:39,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 06:29:39,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:29:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:29:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1070258279, now seen corresponding path program 1 times [2022-12-14 06:29:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:29:39,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137145278] [2022-12-14 06:29:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:29:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:29:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:29:39,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:29:39,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137145278] [2022-12-14 06:29:39,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137145278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:29:39,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:29:39,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:29:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470453887] [2022-12-14 06:29:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:29:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:29:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:29:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:29:39,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:29:39,711 INFO L87 Difference]: Start difference. First operand has 22 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:29:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:29:39,826 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2022-12-14 06:29:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:29:39,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 06:29:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:29:39,833 INFO L225 Difference]: With dead ends: 47 [2022-12-14 06:29:39,833 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 06:29:39,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:29:39,838 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:29:39,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 52 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:29:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 06:29:39,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 06:29:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 06:29:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2022-12-14 06:29:39,868 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 6 [2022-12-14 06:29:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:29:39,868 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2022-12-14 06:29:39,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:29:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2022-12-14 06:29:39,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 06:29:39,869 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:29:39,869 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:29:39,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:29:39,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:29:39,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:29:39,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1088770990, now seen corresponding path program 1 times [2022-12-14 06:29:39,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:29:39,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722599620] [2022-12-14 06:29:39,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:39,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:29:39,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:29:39,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056105398] [2022-12-14 06:29:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:39,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:39,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:29:39,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:29:39,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:29:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:29:39,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 06:29:39,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:29:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:29:40,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:29:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:29:40,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:29:40,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722599620] [2022-12-14 06:29:40,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:29:40,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056105398] [2022-12-14 06:29:40,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056105398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:29:40,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2052887561] [2022-12-14 06:29:40,150 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 06:29:40,150 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:29:40,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:29:40,157 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:29:40,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:29:40,320 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-12-14 06:29:40,339 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:29:40,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2052887561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:29:40,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:29:40,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 7] total 15 [2022-12-14 06:29:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053526138] [2022-12-14 06:29:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:29:40,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:29:40,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:29:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:29:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-12-14 06:29:40,602 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:29:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:29:40,723 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2022-12-14 06:29:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:29:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 06:29:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:29:40,725 INFO L225 Difference]: With dead ends: 55 [2022-12-14 06:29:40,725 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 06:29:40,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-12-14 06:29:40,727 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:29:40,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:29:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 06:29:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 06:29:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 06:29:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2022-12-14 06:29:40,739 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 11 [2022-12-14 06:29:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:29:40,739 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2022-12-14 06:29:40,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:29:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2022-12-14 06:29:40,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 06:29:40,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:29:40,740 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:29:40,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:29:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:40,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:29:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:29:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -700920967, now seen corresponding path program 1 times [2022-12-14 06:29:40,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:29:40,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681512609] [2022-12-14 06:29:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:40,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:29:40,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:29:40,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671943259] [2022-12-14 06:29:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:40,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:40,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:29:40,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:29:40,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:29:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:29:41,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 06:29:41,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:29:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 06:29:41,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:29:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 06:29:41,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:29:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681512609] [2022-12-14 06:29:41,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:29:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671943259] [2022-12-14 06:29:41,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671943259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:29:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1375863347] [2022-12-14 06:29:41,337 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 06:29:41,337 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:29:41,338 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:29:41,338 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:29:41,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:29:45,288 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 06:29:45,290 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:29:45,924 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '602#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:29:45,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:29:45,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:29:45,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-12-14 06:29:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139768452] [2022-12-14 06:29:45,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 06:29:45,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:29:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:29:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:29:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-12-14 06:29:45,927 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-14 06:29:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:29:46,242 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2022-12-14 06:29:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:29:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 38 [2022-12-14 06:29:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:29:46,245 INFO L225 Difference]: With dead ends: 62 [2022-12-14 06:29:46,245 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 06:29:46,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:29:46,246 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:29:46,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 41 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:29:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 06:29:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2022-12-14 06:29:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 06:29:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-12-14 06:29:46,262 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 38 [2022-12-14 06:29:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:29:46,262 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-12-14 06:29:46,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-14 06:29:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-12-14 06:29:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 06:29:46,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:29:46,264 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:29:46,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:29:46,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:46,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:29:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:29:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1757443022, now seen corresponding path program 2 times [2022-12-14 06:29:46,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:29:46,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98160354] [2022-12-14 06:29:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:29:46,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:29:46,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590678646] [2022-12-14 06:29:46,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:29:46,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:46,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:29:46,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:29:46,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:29:46,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 06:29:46,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:29:46,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 06:29:46,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:29:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-14 06:29:46,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:29:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-14 06:29:46,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:29:46,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98160354] [2022-12-14 06:29:46,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:29:46,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590678646] [2022-12-14 06:29:46,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590678646] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:29:46,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1696097118] [2022-12-14 06:29:46,608 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 06:29:46,608 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:29:46,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:29:46,609 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:29:46,609 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:29:49,226 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2022-12-14 06:29:49,250 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:29:50,701 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1051#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:29:50,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:29:50,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:29:50,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-14 06:29:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98147614] [2022-12-14 06:29:50,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 06:29:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 06:29:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:29:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 06:29:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:29:50,703 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-14 06:29:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:29:50,838 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2022-12-14 06:29:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:29:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 43 [2022-12-14 06:29:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:29:50,840 INFO L225 Difference]: With dead ends: 74 [2022-12-14 06:29:50,840 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 06:29:50,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-12-14 06:29:50,841 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:29:50,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 214 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:29:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 06:29:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2022-12-14 06:29:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-14 06:29:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2022-12-14 06:29:50,861 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 43 [2022-12-14 06:29:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:29:50,861 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2022-12-14 06:29:50,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-14 06:29:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2022-12-14 06:29:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 06:29:50,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:29:50,862 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:29:50,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:29:51,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:51,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:29:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:29:51,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1748922073, now seen corresponding path program 3 times [2022-12-14 06:29:51,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:29:51,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77693421] [2022-12-14 06:29:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:29:51,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:29:51,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314451483] [2022-12-14 06:29:51,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 06:29:51,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:51,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:29:51,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:29:51,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:29:51,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 06:29:51,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:29:51,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 06:29:51,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:29:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 06:29:51,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:29:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 06:29:51,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:29:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77693421] [2022-12-14 06:29:51,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:29:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314451483] [2022-12-14 06:29:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314451483] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:29:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1557307706] [2022-12-14 06:29:51,498 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 06:29:51,498 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:29:51,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:29:51,499 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:29:51,503 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:29:54,494 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 06:29:54,497 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:29:55,078 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1565#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:29:55,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:29:55,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:29:55,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-12-14 06:29:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190472756] [2022-12-14 06:29:55,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 06:29:55,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:29:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:29:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:29:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-12-14 06:29:55,079 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-12-14 06:29:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:29:55,728 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-12-14 06:29:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:29:55,729 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 48 [2022-12-14 06:29:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:29:55,730 INFO L225 Difference]: With dead ends: 82 [2022-12-14 06:29:55,731 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 06:29:55,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2022-12-14 06:29:55,732 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:29:55,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 54 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:29:55,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 06:29:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2022-12-14 06:29:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.05) internal successors, (42), 42 states have internal predecessors, (42), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 06:29:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2022-12-14 06:29:55,749 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 48 [2022-12-14 06:29:55,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:29:55,749 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2022-12-14 06:29:55,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 5 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-12-14 06:29:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2022-12-14 06:29:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:29:55,751 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:29:55,751 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:29:55,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:29:55,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:55,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:29:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:29:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2025080784, now seen corresponding path program 1 times [2022-12-14 06:29:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:29:55,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806455882] [2022-12-14 06:29:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:55,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:29:55,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:29:55,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704263356] [2022-12-14 06:29:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:29:55,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:29:55,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:29:55,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:29:55,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:29:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:29:56,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 06:29:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:29:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-14 06:29:56,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:29:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-14 06:29:56,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:29:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806455882] [2022-12-14 06:29:56,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:29:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704263356] [2022-12-14 06:29:56,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704263356] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:29:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872762368] [2022-12-14 06:29:56,391 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 06:29:56,391 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:29:56,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:29:56,392 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:29:56,392 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:29:59,592 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 06:29:59,595 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:30:00,493 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2192#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:30:00,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:30:00,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:30:00,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-14 06:30:00,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973601728] [2022-12-14 06:30:00,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:00,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 06:30:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 06:30:00,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-12-14 06:30:00,495 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-12-14 06:30:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:00,836 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-12-14 06:30:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 06:30:00,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 64 [2022-12-14 06:30:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:00,838 INFO L225 Difference]: With dead ends: 94 [2022-12-14 06:30:00,838 INFO L226 Difference]: Without dead ends: 92 [2022-12-14 06:30:00,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:30:00,838 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:00,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 149 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:30:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-14 06:30:00,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2022-12-14 06:30:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-14 06:30:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2022-12-14 06:30:00,859 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 64 [2022-12-14 06:30:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:00,859 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2022-12-14 06:30:00,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-12-14 06:30:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2022-12-14 06:30:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 06:30:00,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:00,860 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:00,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 06:30:01,062 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:30:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1309118309, now seen corresponding path program 1 times [2022-12-14 06:30:01,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:30:01,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887060434] [2022-12-14 06:30:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:30:01,086 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:30:01,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541403287] [2022-12-14 06:30:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:01,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:01,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:01,090 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:01,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 06:30:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:01,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 06:30:01,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-14 06:30:01,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:01,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:30:01,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887060434] [2022-12-14 06:30:01,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:30:01,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541403287] [2022-12-14 06:30:01,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541403287] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:30:01,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [934359273] [2022-12-14 06:30:01,399 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 06:30:01,399 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:30:01,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:30:01,399 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:30:01,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:30:04,488 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 06:30:04,491 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:30:05,516 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2826#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:30:05,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:30:05,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:30:05,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-12-14 06:30:05,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250949461] [2022-12-14 06:30:05,517 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:05,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:30:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:30:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-12-14 06:30:05,518 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 06:30:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:05,654 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2022-12-14 06:30:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:30:05,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 69 [2022-12-14 06:30:05,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:05,657 INFO L225 Difference]: With dead ends: 97 [2022-12-14 06:30:05,657 INFO L226 Difference]: Without dead ends: 88 [2022-12-14 06:30:05,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:30:05,657 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:05,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:30:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-14 06:30:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-12-14 06:30:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-14 06:30:05,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2022-12-14 06:30:05,678 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 69 [2022-12-14 06:30:05,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:05,678 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2022-12-14 06:30:05,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 06:30:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2022-12-14 06:30:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 06:30:05,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:05,679 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-12-14 06:30:05,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:05,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:30:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash 33509209, now seen corresponding path program 4 times [2022-12-14 06:30:05,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:30:05,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649600021] [2022-12-14 06:30:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:05,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:30:05,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:30:05,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633565754] [2022-12-14 06:30:05,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 06:30:05,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:05,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:05,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:05,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 06:30:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:05,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 06:30:05,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 52 proven. 47 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-14 06:30:06,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 52 proven. 47 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-14 06:30:06,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:30:06,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649600021] [2022-12-14 06:30:06,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:30:06,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633565754] [2022-12-14 06:30:06,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633565754] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:06,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1477461965] [2022-12-14 06:30:06,296 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 06:30:06,297 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:30:06,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:30:06,297 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:30:06,297 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:30:08,959 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 06:30:08,961 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:30:09,470 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3548#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:30:09,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:30:09,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:30:09,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-12-14 06:30:09,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503906060] [2022-12-14 06:30:09,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:09,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 06:30:09,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:09,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 06:30:09,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:30:09,472 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 9 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2022-12-14 06:30:12,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 06:30:14,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 06:30:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:14,286 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2022-12-14 06:30:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 06:30:14,286 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 9 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 70 [2022-12-14 06:30:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:14,287 INFO L225 Difference]: With dead ends: 110 [2022-12-14 06:30:14,287 INFO L226 Difference]: Without dead ends: 108 [2022-12-14 06:30:14,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=221, Invalid=1111, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 06:30:14,288 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:14,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 61 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 465 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 06:30:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-14 06:30:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2022-12-14 06:30:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 57 states have internal predecessors, (58), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-14 06:30:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2022-12-14 06:30:14,314 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 70 [2022-12-14 06:30:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:14,314 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2022-12-14 06:30:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 9 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2022-12-14 06:30:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2022-12-14 06:30:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 06:30:14,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:14,315 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:14,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 06:30:14,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 06:30:14,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:30:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1760296702, now seen corresponding path program 2 times [2022-12-14 06:30:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:30:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159161742] [2022-12-14 06:30:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:30:14,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:30:14,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283137815] [2022-12-14 06:30:14,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:30:14,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:14,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:14,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:14,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 06:30:14,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 06:30:14,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:30:14,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 06:30:14,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 107 proven. 38 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-14 06:30:14,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:15,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:30:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159161742] [2022-12-14 06:30:15,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:30:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283137815] [2022-12-14 06:30:15,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283137815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:30:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2116991247] [2022-12-14 06:30:15,367 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 06:30:15,367 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:30:15,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:30:15,368 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:30:15,368 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:30:18,527 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 06:30:18,530 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:30:19,685 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4314#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:30:19,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:30:19,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:30:19,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-12-14 06:30:19,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015878608] [2022-12-14 06:30:19,686 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:19,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 06:30:19,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:19,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 06:30:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-12-14 06:30:19,688 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 06:30:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:20,107 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2022-12-14 06:30:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 06:30:20,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 96 [2022-12-14 06:30:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:20,109 INFO L225 Difference]: With dead ends: 123 [2022-12-14 06:30:20,109 INFO L226 Difference]: Without dead ends: 110 [2022-12-14 06:30:20,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-12-14 06:30:20,110 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:20,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:30:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-14 06:30:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-12-14 06:30:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 23 states have call successors, (23), 19 states have call predecessors, (23), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-14 06:30:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2022-12-14 06:30:20,153 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 96 [2022-12-14 06:30:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:20,153 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2022-12-14 06:30:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 06:30:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2022-12-14 06:30:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 06:30:20,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:20,154 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:20,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 06:30:20,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:20,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:30:20,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:20,355 INFO L85 PathProgramCache]: Analyzing trace with hash 74939536, now seen corresponding path program 2 times [2022-12-14 06:30:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:30:20,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044546708] [2022-12-14 06:30:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:20,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:30:20,362 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:30:20,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247419936] [2022-12-14 06:30:20,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:30:20,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:20,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:20,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 06:30:20,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 06:30:20,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:30:20,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 06:30:20,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-12-14 06:30:20,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:20,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:30:20,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044546708] [2022-12-14 06:30:20,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:30:20,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247419936] [2022-12-14 06:30:20,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247419936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:30:20,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913771553] [2022-12-14 06:30:20,830 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 06:30:20,831 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:30:20,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:30:20,831 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:30:20,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:30:24,057 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 06:30:24,059 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:30:24,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5040#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:30:24,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:30:24,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:30:24,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-12-14 06:30:24,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727794947] [2022-12-14 06:30:24,817 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:24,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 06:30:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 06:30:24,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-12-14 06:30:24,818 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 06:30:24,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:24,942 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2022-12-14 06:30:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:30:24,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 118 [2022-12-14 06:30:24,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:24,944 INFO L225 Difference]: With dead ends: 116 [2022-12-14 06:30:24,944 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 06:30:24,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-12-14 06:30:24,946 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:24,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 23 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:30:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 06:30:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-12-14 06:30:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 23 states have call successors, (23), 20 states have call predecessors, (23), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-14 06:30:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2022-12-14 06:30:24,969 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 118 [2022-12-14 06:30:24,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:24,970 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2022-12-14 06:30:24,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 06:30:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2022-12-14 06:30:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-14 06:30:24,971 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:24,971 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:24,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:25,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 06:30:25,172 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:30:25,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:25,174 INFO L85 PathProgramCache]: Analyzing trace with hash -782735301, now seen corresponding path program 3 times [2022-12-14 06:30:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:30:25,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152051584] [2022-12-14 06:30:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:25,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:30:25,184 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:30:25,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718838358] [2022-12-14 06:30:25,184 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 06:30:25,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:25,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:25,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:25,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 06:30:28,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 06:30:28,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:30:28,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-14 06:30:28,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 188 proven. 210 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-12-14 06:30:29,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:33,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:30:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152051584] [2022-12-14 06:30:33,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:30:33,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718838358] [2022-12-14 06:30:33,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718838358] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:30:33,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [360680613] [2022-12-14 06:30:33,034 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 06:30:33,034 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:30:33,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:30:33,034 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:30:33,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:30:35,779 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2022-12-14 06:30:35,802 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:30:42,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5894#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 06:30:42,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:30:42,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:30:42,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-12-14 06:30:42,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230510445] [2022-12-14 06:30:42,687 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:42,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 06:30:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 06:30:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2022-12-14 06:30:42,688 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 14 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 06:30:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:44,699 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2022-12-14 06:30:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:30:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) Word has length 123 [2022-12-14 06:30:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:44,700 INFO L225 Difference]: With dead ends: 112 [2022-12-14 06:30:44,700 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 06:30:44,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 06:30:44,701 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:44,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 20 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 06:30:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 06:30:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 06:30:44,702 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) [2022-12-14 06:30:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 06:30:44,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 123 [2022-12-14 06:30:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:44,702 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 06:30:44,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 06:30:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 06:30:44,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 06:30:44,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 06:30:44,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 06:30:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 06:30:44,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 06:30:51,187 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 06:30:51,187 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~y~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse5 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse5))) (.cse3 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse4 (<= (+ 6 .cse5) |ULTIMATE.start_main_~z~0#1|))) (or (and .cse0 (<= |ULTIMATE.start_main_~a~0#1| 0) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (not (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse2 (<= |ULTIMATE.start_main_~a~0#1| 10) .cse3 (<= (div (- |ULTIMATE.start_main_~z~0#1|) (- 6)) (+ 2 |ULTIMATE.start_main_~a~0#1|)) .cse4)))) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse0)) (<= (+ 6 .cse0) |ULTIMATE.start_main_~z~0#1|))) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse0)) (<= (+ 6 .cse0) |ULTIMATE.start_main_~z~0#1|))) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse2 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse4 (+ 6 .cse2)) (.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 .cse5)) (.cse3 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (<= |ULTIMATE.start_main_~a~0#1| 0) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse2)) .cse3 (<= .cse4 |ULTIMATE.start_main_~z~0#1|)) (and (= |ULTIMATE.start_main_~z~0#1| .cse4) (not (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (= (+ .cse0 5 |ULTIMATE.start_main_~y~0#1|) (+ .cse1 |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 10) .cse3 (= (+ (* 6 .cse5) (* |ULTIMATE.start_main_~n~0#1| 12) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 8) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= (div (- |ULTIMATE.start_main_~z~0#1|) (- 6)) (+ 2 |ULTIMATE.start_main_~a~0#1|)))))) [2022-12-14 06:30:51,188 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 06:30:51,188 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse0)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~y~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= (+ 6 .cse0) |ULTIMATE.start_main_~z~0#1|))) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~y~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (and (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~y~0#1|) (+ (* 3 .cse0) |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 6 .cse0) (* |ULTIMATE.start_main_~n~0#1| 12) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 8) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)))) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse0 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse0)) (<= (+ 6 .cse0) |ULTIMATE.start_main_~z~0#1|))) [2022-12-14 06:30:51,188 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse0)) (<= (+ 6 .cse0) |ULTIMATE.start_main_~z~0#1|))) [2022-12-14 06:30:51,189 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse5 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse5))) (.cse3 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse4 (<= (+ 6 .cse5) |ULTIMATE.start_main_~z~0#1|))) (or (and (= (+ 5 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~z~0#1|) .cse0 (<= |ULTIMATE.start_main_~a~0#1| 0) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (not (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse2 (<= |ULTIMATE.start_main_~a~0#1| 10) .cse3 (<= (div (- |ULTIMATE.start_main_~z~0#1|) (- 6)) (+ 2 |ULTIMATE.start_main_~a~0#1|)) .cse4)))) [2022-12-14 06:30:51,189 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (< |ULTIMATE.start_main_~z~0#1| (+ 7 .cse0)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~y~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= (+ 6 .cse0) |ULTIMATE.start_main_~z~0#1|))) [2022-12-14 06:30:51,189 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (and (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~y~0#1|) (+ (* 3 .cse0) |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 6 .cse0) (* |ULTIMATE.start_main_~n~0#1| 12) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 8) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)))) [2022-12-14 06:30:51,189 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-12-14 06:30:51,189 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-12-14 06:30:51,189 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-12-14 06:30:51,189 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-12-14 06:30:51,189 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2022-12-14 06:30:51,189 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-12-14 06:30:51,191 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1] [2022-12-14 06:30:51,193 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:30:51,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:30:51 BoogieIcfgContainer [2022-12-14 06:30:51,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:30:51,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:30:51,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:30:51,202 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:30:51,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:29:39" (3/4) ... [2022-12-14 06:30:51,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 06:30:51,208 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 06:30:51,210 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-14 06:30:51,210 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 06:30:51,211 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 06:30:51,211 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 06:30:51,231 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:30:51,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:30:51,232 INFO L158 Benchmark]: Toolchain (without parser) took 72455.41ms. Allocated memory was 140.5MB in the beginning and 297.8MB in the end (delta: 157.3MB). Free memory was 106.2MB in the beginning and 122.1MB in the end (delta: -15.9MB). Peak memory consumption was 143.4MB. Max. memory is 16.1GB. [2022-12-14 06:30:51,232 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory was 112.0MB in the beginning and 111.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:30:51,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.30ms. Allocated memory is still 140.5MB. Free memory was 105.8MB in the beginning and 95.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 06:30:51,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.32ms. Allocated memory is still 140.5MB. Free memory was 95.1MB in the beginning and 93.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:30:51,232 INFO L158 Benchmark]: Boogie Preprocessor took 14.49ms. Allocated memory is still 140.5MB. Free memory was 93.8MB in the beginning and 92.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:30:51,233 INFO L158 Benchmark]: RCFGBuilder took 279.69ms. Allocated memory is still 140.5MB. Free memory was 92.5MB in the beginning and 79.5MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 06:30:51,233 INFO L158 Benchmark]: TraceAbstraction took 71894.52ms. Allocated memory was 140.5MB in the beginning and 297.8MB in the end (delta: 157.3MB). Free memory was 78.7MB in the beginning and 125.3MB in the end (delta: -46.6MB). Peak memory consumption was 152.7MB. Max. memory is 16.1GB. [2022-12-14 06:30:51,233 INFO L158 Benchmark]: Witness Printer took 29.06ms. Allocated memory is still 297.8MB. Free memory was 125.3MB in the beginning and 122.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:30:51,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory was 112.0MB in the beginning and 111.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.30ms. Allocated memory is still 140.5MB. Free memory was 105.8MB in the beginning and 95.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.32ms. Allocated memory is still 140.5MB. Free memory was 95.1MB in the beginning and 93.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.49ms. Allocated memory is still 140.5MB. Free memory was 93.8MB in the beginning and 92.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 279.69ms. Allocated memory is still 140.5MB. Free memory was 92.5MB in the beginning and 79.5MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 71894.52ms. Allocated memory was 140.5MB in the beginning and 297.8MB in the end (delta: 157.3MB). Free memory was 78.7MB in the beginning and 125.3MB in the end (delta: -46.6MB). Peak memory consumption was 152.7MB. Max. memory is 16.1GB. * Witness Printer took 29.06ms. Allocated memory is still 297.8MB. Free memory was 125.3MB in the beginning and 122.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.8s, OverallIterations: 11, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 842 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 574 mSDsCounter, 319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2370 IncrementalHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 319 mSolverCounterUnsat, 268 mSDtfsCounter, 2370 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1792 GetRequests, 1526 SyntacticMatches, 9 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=10, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 44 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 105 NumberOfFragments, 837 HoareAnnotationTreeSize, 65 FomulaSimplifications, 211 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 20884 FormulaSimplificationTreeSizeReductionInter, 6.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 686 NumberOfCodeBlocks, 508 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 943 ConstructedInterpolants, 0 QuantifiedInterpolants, 5077 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1326 ConjunctsInSsa, 289 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 4089/4556 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: 0.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 4, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME: 0.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 25, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, 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: 50, DAG_COMPRESSION_RETAINED_NODES: 29, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((n * n * n == x && z == 6 + 6 * n) && n <= a + 1) && 3 * n + 5 + y == 3 * (n * n) + z) && a <= 10) && 0 <= a - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: z < 7 + 6 * n && 6 + 6 * n <= z RESULT: Ultimate proved your program to be correct! [2022-12-14 06:30:51,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedfa8df-75d3-4779-a617-922d1f5550f8/bin/utaipan-gh47qXpMRh/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