./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0 --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 7aff0c23635f1e1acd85672a1024d6cb6d0af57cad0028c56f5d301198b4eae6 --- 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-e04fb08 [2022-11-16 16:07:03,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:07:03,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:07:03,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:07:03,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:07:03,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:07:03,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:07:03,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:07:03,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:07:03,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:07:03,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:07:03,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:07:03,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:07:03,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:07:03,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:07:03,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:07:03,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:07:03,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:07:03,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:07:03,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:07:03,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:07:03,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:07:03,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:07:03,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:07:03,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:07:03,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:07:03,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:07:03,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:07:03,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:07:03,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:07:03,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:07:03,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:07:03,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:07:03,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:07:03,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:07:03,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:07:03,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:07:03,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:07:03,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:07:03,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:07:03,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:07:03,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:07:03,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:07:03,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:07:03,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:07:03,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:07:03,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:07:03,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:07:03,955 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:07:03,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:07:03,955 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:07:03,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:07:03,956 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:07:03,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:07:03,957 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:07:03,957 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:07:03,957 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:07:03,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:07:03,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:07:03,958 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:07:03,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:07:03,959 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:07:03,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:07:03,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:07:03,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:07:03,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:07:03,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:07:03,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:07:03,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:07:03,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:07:03,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:07:03,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:07:03,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:07:03,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:07:03,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:07:03,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:07:03,964 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:07:03,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:07:03,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:07:03,965 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:07:03,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:07:03,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:07:03,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:07:03,965 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_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aff0c23635f1e1acd85672a1024d6cb6d0af57cad0028c56f5d301198b4eae6 [2022-11-16 16:07:04,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:07:04,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:07:04,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:07:04,391 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:07:04,392 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:07:04,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c [2022-11-16 16:07:04,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/data/63f1a6092/7b44774025f949efa77ca277c565af0a/FLAG67a8d5567 [2022-11-16 16:07:05,033 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:07:05,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c [2022-11-16 16:07:05,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/data/63f1a6092/7b44774025f949efa77ca277c565af0a/FLAG67a8d5567 [2022-11-16 16:07:05,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/data/63f1a6092/7b44774025f949efa77ca277c565af0a [2022-11-16 16:07:05,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:07:05,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:07:05,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:07:05,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:07:05,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:07:05,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bbd2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05, skipping insertion in model container [2022-11-16 16:07:05,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:07:05,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:07:05,631 WARN L229 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_b03df4c8-4616-473f-b286-d4a1e827ed82/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2022-11-16 16:07:05,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:07:05,688 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:07:05,704 WARN L229 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_b03df4c8-4616-473f-b286-d4a1e827ed82/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2022-11-16 16:07:05,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:07:05,726 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:07:05,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05 WrapperNode [2022-11-16 16:07:05,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:07:05,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:07:05,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:07:05,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:07:05,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,767 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-16 16:07:05,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:07:05,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:07:05,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:07:05,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:07:05,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,791 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:07:05,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:07:05,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:07:05,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:07:05,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (1/1) ... [2022-11-16 16:07:05,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:07:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:05,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:07:05,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:07:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:07:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 16:07:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 16:07:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:07:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:07:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:07:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 16:07:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 16:07:05,962 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:07:05,965 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:07:06,134 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:07:06,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:07:06,175 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:07:06,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:07:06 BoogieIcfgContainer [2022-11-16 16:07:06,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:07:06,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:07:06,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:07:06,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:07:06,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:07:05" (1/3) ... [2022-11-16 16:07:06,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67272ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:07:06, skipping insertion in model container [2022-11-16 16:07:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:07:05" (2/3) ... [2022-11-16 16:07:06,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67272ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:07:06, skipping insertion in model container [2022-11-16 16:07:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:07:06" (3/3) ... [2022-11-16 16:07:06,203 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.c [2022-11-16 16:07:06,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:07:06,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:07:06,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:07:06,359 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;@154cd173, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:07:06,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:07:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:07:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 16:07:06,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:06,376 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:06,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:06,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:06,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1046920148, now seen corresponding path program 1 times [2022-11-16 16:07:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:06,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489722667] [2022-11-16 16:07:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:06,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:06,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489722667] [2022-11-16 16:07:06,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 16:07:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251661680] [2022-11-16 16:07:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:06,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:06,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:06,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:07:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:06,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 16:07:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:06,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:07:06,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251661680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:07:06,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:07:06,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:07:06,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355902668] [2022-11-16 16:07:06,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:07:06,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:07:06,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:06,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:07:06,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:07:06,813 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:07:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:06,851 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2022-11-16 16:07:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:07:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-16 16:07:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:06,878 INFO L225 Difference]: With dead ends: 32 [2022-11-16 16:07:06,878 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 16:07:06,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:07:06,891 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:06,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:07:06,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 16:07:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 16:07:06,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:07:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-16 16:07:06,936 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2022-11-16 16:07:06,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:06,938 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-16 16:07:06,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:07:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-16 16:07:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:07:06,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:06,941 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:06,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:07,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 16:07:07,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:07,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1317434454, now seen corresponding path program 1 times [2022-11-16 16:07:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:07,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221107986] [2022-11-16 16:07:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:07,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:07,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221107986] [2022-11-16 16:07:07,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 16:07:07,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015158415] [2022-11-16 16:07:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:07,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:07,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:07,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:07,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:07:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:07,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:07:07,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:07,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:07:07,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015158415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:07:07,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:07:07,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:07:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436751909] [2022-11-16 16:07:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:07:07,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:07:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:07,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:07:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:07:07,375 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:07:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:07,406 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-16 16:07:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:07:07,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-16 16:07:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:07,408 INFO L225 Difference]: With dead ends: 26 [2022-11-16 16:07:07,408 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 16:07:07,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:07:07,410 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:07,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:07:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 16:07:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 16:07:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:07:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-16 16:07:07,419 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 14 [2022-11-16 16:07:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:07,420 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-16 16:07:07,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:07:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-16 16:07:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:07:07,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:07,422 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:07,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:07,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:07,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:07,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1319221914, now seen corresponding path program 1 times [2022-11-16 16:07:07,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439080504] [2022-11-16 16:07:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:07,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:07,674 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:07,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227233094] [2022-11-16 16:07:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:07,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:07,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:07,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:07,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:07:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:07,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 16:07:07,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:07:07,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:07:07,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:07,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439080504] [2022-11-16 16:07:07,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:07,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227233094] [2022-11-16 16:07:07,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227233094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:07:07,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:07:07,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 16:07:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429619598] [2022-11-16 16:07:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:07:07,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:07:07,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:07,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:07:07,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:07:07,983 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:07:08,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:08,077 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-16 16:07:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:07:08,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-16 16:07:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:08,079 INFO L225 Difference]: With dead ends: 28 [2022-11-16 16:07:08,079 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 16:07:08,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:07:08,081 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:08,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:07:08,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 16:07:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-16 16:07:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:07:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-16 16:07:08,091 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-16 16:07:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:08,091 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-16 16:07:08,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:07:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-16 16:07:08,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:07:08,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:08,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:08,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 16:07:08,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1562521278, now seen corresponding path program 1 times [2022-11-16 16:07:08,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:08,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430828914] [2022-11-16 16:07:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:08,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16577702] [2022-11-16 16:07:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:08,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:08,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:08,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:07:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:08,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 16:07:08,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:07:08,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:08,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:08,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430828914] [2022-11-16 16:07:08,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:08,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16577702] [2022-11-16 16:07:08,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16577702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:08,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778280677] [2022-11-16 16:07:08,979 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-16 16:07:08,979 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:08,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:08,991 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:08,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:09,638 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-16 16:07:09,659 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:09,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:11,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [778280677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:07:11,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:11,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11, 7] total 26 [2022-11-16 16:07:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472071480] [2022-11-16 16:07:11,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:07:11,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 16:07:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:11,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 16:07:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-16 16:07:11,712 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:07:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:11,839 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-11-16 16:07:11,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 16:07:11,840 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2022-11-16 16:07:11,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:11,841 INFO L225 Difference]: With dead ends: 32 [2022-11-16 16:07:11,842 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 16:07:11,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-16 16:07:11,844 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:11,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-16 16:07:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 16:07:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 16:07:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:07:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-16 16:07:11,856 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-11-16 16:07:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:11,857 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-16 16:07:11,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:07:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-16 16:07:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 16:07:11,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:11,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:11,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:12,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:12,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash -182192907, now seen corresponding path program 1 times [2022-11-16 16:07:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:12,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594127019] [2022-11-16 16:07:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:12,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:12,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803978519] [2022-11-16 16:07:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:12,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:12,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:12,099 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:12,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:07:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:12,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:07:12,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:12,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:12,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:12,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594127019] [2022-11-16 16:07:12,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:12,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803978519] [2022-11-16 16:07:12,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803978519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:12,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [314399187] [2022-11-16 16:07:12,268 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-16 16:07:12,268 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:12,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:12,269 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:12,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:13,133 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2022-11-16 16:07:13,369 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:13,421 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:14,836 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '709#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:14,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:14,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:14,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-16 16:07:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323785279] [2022-11-16 16:07:14,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:07:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:07:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-16 16:07:14,839 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 16:07:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:14,965 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2022-11-16 16:07:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 16:07:14,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 22 [2022-11-16 16:07:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:14,967 INFO L225 Difference]: With dead ends: 56 [2022-11-16 16:07:14,967 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 16:07:14,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-11-16 16:07:14,969 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:14,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 77 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:07:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 16:07:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-11-16 16:07:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:07:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-11-16 16:07:14,983 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 22 [2022-11-16 16:07:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:14,984 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-11-16 16:07:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 16:07:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-11-16 16:07:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 16:07:14,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:14,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:14,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 16:07:15,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:15,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -180405447, now seen corresponding path program 1 times [2022-11-16 16:07:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:15,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230440453] [2022-11-16 16:07:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:15,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:15,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:15,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990907074] [2022-11-16 16:07:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:15,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:15,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:15,226 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:15,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:07:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:15,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 16:07:15,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:07:15,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:15,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:15,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230440453] [2022-11-16 16:07:15,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:15,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990907074] [2022-11-16 16:07:15,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990907074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:15,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1924599269] [2022-11-16 16:07:15,793 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-16 16:07:15,793 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:15,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:15,794 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:15,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:16,489 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2022-11-16 16:07:16,550 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:16,585 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:17,807 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1009#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (< ~counter~0 51) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:17,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:17,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:17,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 13 [2022-11-16 16:07:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22923075] [2022-11-16 16:07:17,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:17,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 16:07:17,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 16:07:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-11-16 16:07:17,812 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 16:07:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:18,037 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-11-16 16:07:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 16:07:18,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 22 [2022-11-16 16:07:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:18,040 INFO L225 Difference]: With dead ends: 59 [2022-11-16 16:07:18,040 INFO L226 Difference]: Without dead ends: 51 [2022-11-16 16:07:18,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2022-11-16 16:07:18,042 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:18,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 50 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:07:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-16 16:07:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2022-11-16 16:07:18,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:07:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-11-16 16:07:18,059 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 22 [2022-11-16 16:07:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:18,060 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-11-16 16:07:18,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 16:07:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-11-16 16:07:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 16:07:18,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:18,062 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:18,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:18,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:18,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:18,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash 408559265, now seen corresponding path program 1 times [2022-11-16 16:07:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:18,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397400528] [2022-11-16 16:07:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:18,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:18,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:18,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152192503] [2022-11-16 16:07:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:18,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:18,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:18,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:18,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 16:07:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:18,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 16:07:18,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 16:07:18,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 16:07:18,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:18,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397400528] [2022-11-16 16:07:18,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:18,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152192503] [2022-11-16 16:07:18,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152192503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:18,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [316112561] [2022-11-16 16:07:18,733 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-16 16:07:18,734 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:18,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:18,736 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:18,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:19,670 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-16 16:07:19,675 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:19,705 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:20,927 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1349#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:20,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:20,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:20,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2022-11-16 16:07:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923567279] [2022-11-16 16:07:20,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:20,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:07:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:07:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-11-16 16:07:20,930 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 16:07:21,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:21,153 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-11-16 16:07:21,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 16:07:21,154 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2022-11-16 16:07:21,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:21,155 INFO L225 Difference]: With dead ends: 51 [2022-11-16 16:07:21,155 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 16:07:21,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2022-11-16 16:07:21,156 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:21,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 69 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:07:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 16:07:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-16 16:07:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:07:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-11-16 16:07:21,168 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 28 [2022-11-16 16:07:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-11-16 16:07:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 16:07:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-11-16 16:07:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 16:07:21,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:21,170 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:21,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:21,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 16:07:21,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:21,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash -235004718, now seen corresponding path program 2 times [2022-11-16 16:07:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:21,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093897337] [2022-11-16 16:07:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:21,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:21,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298672337] [2022-11-16 16:07:21,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:07:21,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:21,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:21,391 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:21,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 16:07:21,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 16:07:21,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:07:21,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 16:07:21,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:21,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 16:07:21,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:21,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093897337] [2022-11-16 16:07:21,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:21,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298672337] [2022-11-16 16:07:21,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298672337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:21,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781391908] [2022-11-16 16:07:21,672 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-16 16:07:21,673 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:21,673 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:21,673 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:21,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:22,489 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-16 16:07:22,494 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:22,524 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:23,553 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1790#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:23,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:23,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:23,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-16 16:07:23,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845736344] [2022-11-16 16:07:23,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:23,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:07:23,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:23,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:07:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-11-16 16:07:23,558 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-16 16:07:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:23,895 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-11-16 16:07:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 16:07:23,896 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 46 [2022-11-16 16:07:23,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:23,898 INFO L225 Difference]: With dead ends: 98 [2022-11-16 16:07:23,898 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 16:07:23,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 16:07:23,899 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 111 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:23,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 103 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:07:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 16:07:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-16 16:07:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 16:07:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2022-11-16 16:07:23,918 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 46 [2022-11-16 16:07:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:23,919 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2022-11-16 16:07:23,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-16 16:07:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2022-11-16 16:07:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 16:07:23,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:23,922 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:23,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:24,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 16:07:24,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1419782260, now seen corresponding path program 3 times [2022-11-16 16:07:24,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:24,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519473934] [2022-11-16 16:07:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:24,150 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:24,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662487725] [2022-11-16 16:07:24,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:07:24,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:24,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:24,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:24,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 16:07:24,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:07:24,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:07:24,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 16:07:24,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:24,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-16 16:07:24,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:24,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519473934] [2022-11-16 16:07:24,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:24,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662487725] [2022-11-16 16:07:24,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662487725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:24,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [221539184] [2022-11-16 16:07:24,899 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-16 16:07:24,899 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:24,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:24,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:24,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:25,805 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-16 16:07:25,811 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:25,842 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:26,861 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2670#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:26,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:26,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:26,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 16:07:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598844908] [2022-11-16 16:07:26,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:26,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 16:07:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 16:07:26,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1048, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 16:07:26,868 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 23 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-16 16:07:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:27,613 INFO L93 Difference]: Finished difference Result 194 states and 206 transitions. [2022-11-16 16:07:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 16:07:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 23 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 94 [2022-11-16 16:07:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:27,616 INFO L225 Difference]: With dead ends: 194 [2022-11-16 16:07:27,616 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 16:07:27,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=949, Invalid=2591, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 16:07:27,619 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 197 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:27,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 190 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:07:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 16:07:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-16 16:07:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 140 states have internal predecessors, (141), 25 states have call successors, (25), 24 states have call predecessors, (25), 23 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 16:07:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2022-11-16 16:07:27,651 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 94 [2022-11-16 16:07:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:27,652 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2022-11-16 16:07:27,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 23 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-16 16:07:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2022-11-16 16:07:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 16:07:27,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:27,658 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:27,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:27,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:27,865 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1763378944, now seen corresponding path program 4 times [2022-11-16 16:07:27,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:27,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752260664] [2022-11-16 16:07:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:27,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:27,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:27,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819082294] [2022-11-16 16:07:27,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:07:27,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:27,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:27,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:27,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 16:07:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:28,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 16:07:28,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1938 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:28,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1938 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-11-16 16:07:30,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:30,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752260664] [2022-11-16 16:07:30,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:30,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819082294] [2022-11-16 16:07:30,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819082294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:30,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1925411745] [2022-11-16 16:07:30,020 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-16 16:07:30,021 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:30,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:30,021 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:30,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:30,839 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-16 16:07:30,844 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:30,883 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:32,048 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4438#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:32,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:32,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:32,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2022-11-16 16:07:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420428573] [2022-11-16 16:07:32,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-16 16:07:32,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-16 16:07:32,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1406, Invalid=2500, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 16:07:32,058 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 50 states, 50 states have (on average 4.28) internal successors, (214), 50 states have internal predecessors, (214), 47 states have call successors, (49), 25 states have call predecessors, (49), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2022-11-16 16:07:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:34,395 INFO L93 Difference]: Finished difference Result 386 states and 410 transitions. [2022-11-16 16:07:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-16 16:07:34,399 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.28) internal successors, (214), 50 states have internal predecessors, (214), 47 states have call successors, (49), 25 states have call predecessors, (49), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) Word has length 190 [2022-11-16 16:07:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:34,410 INFO L225 Difference]: With dead ends: 386 [2022-11-16 16:07:34,410 INFO L226 Difference]: Without dead ends: 381 [2022-11-16 16:07:34,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3589, Invalid=7967, Unknown=0, NotChecked=0, Total=11556 [2022-11-16 16:07:34,417 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 474 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:34,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 286 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 16:07:34,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-16 16:07:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-16 16:07:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 284 states have (on average 1.0035211267605635) internal successors, (285), 284 states have internal predecessors, (285), 49 states have call successors, (49), 48 states have call predecessors, (49), 47 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-16 16:07:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2022-11-16 16:07:34,467 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 190 [2022-11-16 16:07:34,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:34,468 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2022-11-16 16:07:34,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.28) internal successors, (214), 50 states have internal predecessors, (214), 47 states have call successors, (49), 25 states have call predecessors, (49), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2022-11-16 16:07:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2022-11-16 16:07:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-16 16:07:34,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:34,479 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:34,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 16:07:34,686 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1767238632, now seen corresponding path program 5 times [2022-11-16 16:07:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:34,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824383118] [2022-11-16 16:07:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:34,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:34,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602751152] [2022-11-16 16:07:34,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:07:34,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:34,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:34,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:34,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 16:07:35,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-16 16:07:35,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:07:35,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 16:07:35,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8466 backedges. 92 proven. 8372 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:07:37,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8466 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4142 trivial. 0 not checked. [2022-11-16 16:07:39,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:39,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824383118] [2022-11-16 16:07:39,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:07:39,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602751152] [2022-11-16 16:07:39,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602751152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:39,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481550374] [2022-11-16 16:07:39,214 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-16 16:07:39,215 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:39,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:39,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:39,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:39,990 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-16 16:07:39,995 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-16 16:07:40,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:41,291 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7938#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:41,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:41,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:07:41,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 54 [2022-11-16 16:07:41,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559171783] [2022-11-16 16:07:41,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:41,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 16:07:41,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 16:07:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1624, Invalid=2798, Unknown=0, NotChecked=0, Total=4422 [2022-11-16 16:07:41,297 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand has 54 states, 54 states have (on average 5.574074074074074) internal successors, (301), 54 states have internal predecessors, (301), 51 states have call successors, (97), 49 states have call predecessors, (97), 48 states have return successors, (96), 50 states have call predecessors, (96), 50 states have call successors, (96) [2022-11-16 16:07:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:43,670 INFO L93 Difference]: Finished difference Result 418 states and 422 transitions. [2022-11-16 16:07:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-16 16:07:43,680 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.574074074074074) internal successors, (301), 54 states have internal predecessors, (301), 51 states have call successors, (97), 49 states have call predecessors, (97), 48 states have return successors, (96), 50 states have call predecessors, (96), 50 states have call successors, (96) Word has length 382 [2022-11-16 16:07:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:43,688 INFO L225 Difference]: With dead ends: 418 [2022-11-16 16:07:43,688 INFO L226 Difference]: Without dead ends: 413 [2022-11-16 16:07:43,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1035 SyntacticMatches, 44 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4219, Invalid=9121, Unknown=0, NotChecked=0, Total=13340 [2022-11-16 16:07:43,695 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 297 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:43,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 311 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 16:07:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-16 16:07:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-11-16 16:07:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 308 states have (on average 1.0032467532467533) internal successors, (309), 308 states have internal predecessors, (309), 53 states have call successors, (53), 52 states have call predecessors, (53), 51 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-16 16:07:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2022-11-16 16:07:43,772 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 382 [2022-11-16 16:07:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:43,775 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2022-11-16 16:07:43,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.574074074074074) internal successors, (301), 54 states have internal predecessors, (301), 51 states have call successors, (97), 49 states have call predecessors, (97), 48 states have return successors, (96), 50 states have call predecessors, (96), 50 states have call successors, (96) [2022-11-16 16:07:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2022-11-16 16:07:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-16 16:07:43,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:43,790 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 50, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:43,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:43,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 16:07:44,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash 507169892, now seen corresponding path program 6 times [2022-11-16 16:07:44,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:44,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993234163] [2022-11-16 16:07:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:44,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:44,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:07:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176277951] [2022-11-16 16:07:44,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:07:44,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:44,046 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:44,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 16:07:44,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:07:44,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 16:07:44,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:07:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:07:45,110 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:07:45,110 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:07:45,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:07:45,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:45,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:45,329 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:45,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:07:45,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:07:45 BoogieIcfgContainer [2022-11-16 16:07:45,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:07:45,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:07:45,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:07:45,571 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:07:45,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:07:06" (3/4) ... [2022-11-16 16:07:45,573 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 16:07:45,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:07:45,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:07:45,783 INFO L158 Benchmark]: Toolchain (without parser) took 40418.67ms. Allocated memory was 136.3MB in the beginning and 343.9MB in the end (delta: 207.6MB). Free memory was 99.7MB in the beginning and 140.6MB in the end (delta: -40.9MB). Peak memory consumption was 166.3MB. Max. memory is 16.1GB. [2022-11-16 16:07:45,784 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory was 116.0MB in the beginning and 115.9MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:07:45,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.65ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 112.8MB in the end (delta: -13.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:07:45,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.49ms. Allocated memory is still 136.3MB. Free memory was 112.8MB in the beginning and 111.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:07:45,786 INFO L158 Benchmark]: Boogie Preprocessor took 25.86ms. Allocated memory is still 136.3MB. Free memory was 111.1MB in the beginning and 110.4MB in the end (delta: 688.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:07:45,787 INFO L158 Benchmark]: RCFGBuilder took 381.76ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 98.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:07:45,787 INFO L158 Benchmark]: TraceAbstraction took 39389.15ms. Allocated memory was 136.3MB in the beginning and 343.9MB in the end (delta: 207.6MB). Free memory was 97.4MB in the beginning and 155.3MB in the end (delta: -57.9MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. [2022-11-16 16:07:45,788 INFO L158 Benchmark]: Witness Printer took 210.64ms. Allocated memory is still 343.9MB. Free memory was 155.3MB in the beginning and 140.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 16:07:45,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory was 116.0MB in the beginning and 115.9MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.65ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 112.8MB in the end (delta: -13.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.49ms. Allocated memory is still 136.3MB. Free memory was 112.8MB in the beginning and 111.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.86ms. Allocated memory is still 136.3MB. Free memory was 111.1MB in the beginning and 110.4MB in the end (delta: 688.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 381.76ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 98.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 39389.15ms. Allocated memory was 136.3MB in the beginning and 343.9MB in the end (delta: 207.6MB). Free memory was 97.4MB in the beginning and 155.3MB in the end (delta: -57.9MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. * Witness Printer took 210.64ms. Allocated memory is still 343.9MB. Free memory was 155.3MB in the beginning and 140.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(x1 >= 0) VAL [counter=0, x1=51, x2=6] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(x2 != 0) VAL [counter=0, x1=51, x2=6] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=51, x2=6, y1=0, y2=0, y3=51] [L36] EXPR counter++ VAL [counter=1, counter++=0, x1=51, x2=6, y1=0, y2=0, y3=51] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=1, x1=51, x2=6, y1=0, y2=0, y3=51] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1, x1=51, x2=6, y1=0, y2=1, y3=50] [L36] EXPR counter++ VAL [counter=2, counter++=1, x1=51, x2=6, y1=0, y2=1, y3=50] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=2, x1=51, x2=6, y1=0, y2=1, y3=50] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2, x1=51, x2=6, y1=0, y2=2, y3=49] [L36] EXPR counter++ VAL [counter=3, counter++=2, x1=51, x2=6, y1=0, y2=2, y3=49] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=3, x1=51, x2=6, y1=0, y2=2, y3=49] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3, x1=51, x2=6, y1=0, y2=3, y3=48] [L36] EXPR counter++ VAL [counter=4, counter++=3, x1=51, x2=6, y1=0, y2=3, y3=48] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=4, x1=51, x2=6, y1=0, y2=3, y3=48] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4, x1=51, x2=6, y1=0, y2=4, y3=47] [L36] EXPR counter++ VAL [counter=5, counter++=4, x1=51, x2=6, y1=0, y2=4, y3=47] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=5, x1=51, x2=6, y1=0, y2=4, y3=47] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5, x1=51, x2=6, y1=0, y2=5, y3=46] [L36] EXPR counter++ VAL [counter=6, counter++=5, x1=51, x2=6, y1=0, y2=5, y3=46] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=6, x1=51, x2=6, y1=0, y2=5, y3=46] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6, x1=51, x2=6, y1=1, y2=0, y3=45] [L36] EXPR counter++ VAL [counter=7, counter++=6, x1=51, x2=6, y1=1, y2=0, y3=45] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=7, x1=51, x2=6, y1=1, y2=0, y3=45] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=7, x1=51, x2=6, y1=1, y2=1, y3=44] [L36] EXPR counter++ VAL [counter=8, counter++=7, x1=51, x2=6, y1=1, y2=1, y3=44] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=8, x1=51, x2=6, y1=1, y2=1, y3=44] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=8, x1=51, x2=6, y1=1, y2=2, y3=43] [L36] EXPR counter++ VAL [counter=9, counter++=8, x1=51, x2=6, y1=1, y2=2, y3=43] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=9, x1=51, x2=6, y1=1, y2=2, y3=43] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=9, x1=51, x2=6, y1=1, y2=3, y3=42] [L36] EXPR counter++ VAL [counter=10, counter++=9, x1=51, x2=6, y1=1, y2=3, y3=42] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=10, x1=51, x2=6, y1=1, y2=3, y3=42] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=10, x1=51, x2=6, y1=1, y2=4, y3=41] [L36] EXPR counter++ VAL [counter=11, counter++=10, x1=51, x2=6, y1=1, y2=4, y3=41] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=11, x1=51, x2=6, y1=1, y2=4, y3=41] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=11, x1=51, x2=6, y1=1, y2=5, y3=40] [L36] EXPR counter++ VAL [counter=12, counter++=11, x1=51, x2=6, y1=1, y2=5, y3=40] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=12, x1=51, x2=6, y1=1, y2=5, y3=40] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=12, x1=51, x2=6, y1=2, y2=0, y3=39] [L36] EXPR counter++ VAL [counter=13, counter++=12, x1=51, x2=6, y1=2, y2=0, y3=39] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=13, x1=51, x2=6, y1=2, y2=0, y3=39] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=13, x1=51, x2=6, y1=2, y2=1, y3=38] [L36] EXPR counter++ VAL [counter=14, counter++=13, x1=51, x2=6, y1=2, y2=1, y3=38] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=14, x1=51, x2=6, y1=2, y2=1, y3=38] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=14, x1=51, x2=6, y1=2, y2=2, y3=37] [L36] EXPR counter++ VAL [counter=15, counter++=14, x1=51, x2=6, y1=2, y2=2, y3=37] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=15, x1=51, x2=6, y1=2, y2=2, y3=37] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=15, x1=51, x2=6, y1=2, y2=3, y3=36] [L36] EXPR counter++ VAL [counter=16, counter++=15, x1=51, x2=6, y1=2, y2=3, y3=36] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=16, x1=51, x2=6, y1=2, y2=3, y3=36] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=16, x1=51, x2=6, y1=2, y2=4, y3=35] [L36] EXPR counter++ VAL [counter=17, counter++=16, x1=51, x2=6, y1=2, y2=4, y3=35] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=17, x1=51, x2=6, y1=2, y2=4, y3=35] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=17, x1=51, x2=6, y1=2, y2=5, y3=34] [L36] EXPR counter++ VAL [counter=18, counter++=17, x1=51, x2=6, y1=2, y2=5, y3=34] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=18, x1=51, x2=6, y1=2, y2=5, y3=34] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=18, x1=51, x2=6, y1=3, y2=0, y3=33] [L36] EXPR counter++ VAL [counter=19, counter++=18, x1=51, x2=6, y1=3, y2=0, y3=33] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=19, x1=51, x2=6, y1=3, y2=0, y3=33] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=19, x1=51, x2=6, y1=3, y2=1, y3=32] [L36] EXPR counter++ VAL [counter=20, counter++=19, x1=51, x2=6, y1=3, y2=1, y3=32] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=20, x1=51, x2=6, y1=3, y2=1, y3=32] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=20, x1=51, x2=6, y1=3, y2=2, y3=31] [L36] EXPR counter++ VAL [counter=21, counter++=20, x1=51, x2=6, y1=3, y2=2, y3=31] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=21] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=21] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=21, x1=51, x2=6, y1=3, y2=2, y3=31] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=21, x1=51, x2=6, y1=3, y2=3, y3=30] [L36] EXPR counter++ VAL [counter=22, counter++=21, x1=51, x2=6, y1=3, y2=3, y3=30] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=22] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=22] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=22, x1=51, x2=6, y1=3, y2=3, y3=30] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=22, x1=51, x2=6, y1=3, y2=4, y3=29] [L36] EXPR counter++ VAL [counter=23, counter++=22, x1=51, x2=6, y1=3, y2=4, y3=29] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=23] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=23] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=23, x1=51, x2=6, y1=3, y2=4, y3=29] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=23, x1=51, x2=6, y1=3, y2=5, y3=28] [L36] EXPR counter++ VAL [counter=24, counter++=23, x1=51, x2=6, y1=3, y2=5, y3=28] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=24] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=24] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=24, x1=51, x2=6, y1=3, y2=5, y3=28] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=24, x1=51, x2=6, y1=4, y2=0, y3=27] [L36] EXPR counter++ VAL [counter=25, counter++=24, x1=51, x2=6, y1=4, y2=0, y3=27] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=25] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=25] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=25, x1=51, x2=6, y1=4, y2=0, y3=27] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=25, x1=51, x2=6, y1=4, y2=1, y3=26] [L36] EXPR counter++ VAL [counter=26, counter++=25, x1=51, x2=6, y1=4, y2=1, y3=26] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=26] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=26] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=26, x1=51, x2=6, y1=4, y2=1, y3=26] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=26, x1=51, x2=6, y1=4, y2=2, y3=25] [L36] EXPR counter++ VAL [counter=27, counter++=26, x1=51, x2=6, y1=4, y2=2, y3=25] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=27] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=27] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=27, x1=51, x2=6, y1=4, y2=2, y3=25] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=27, x1=51, x2=6, y1=4, y2=3, y3=24] [L36] EXPR counter++ VAL [counter=28, counter++=27, x1=51, x2=6, y1=4, y2=3, y3=24] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=28] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=28] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=28, x1=51, x2=6, y1=4, y2=3, y3=24] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=28, x1=51, x2=6, y1=4, y2=4, y3=23] [L36] EXPR counter++ VAL [counter=29, counter++=28, x1=51, x2=6, y1=4, y2=4, y3=23] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=29] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=29] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=29, x1=51, x2=6, y1=4, y2=4, y3=23] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=29, x1=51, x2=6, y1=4, y2=5, y3=22] [L36] EXPR counter++ VAL [counter=30, counter++=29, x1=51, x2=6, y1=4, y2=5, y3=22] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=30] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=30] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=30, x1=51, x2=6, y1=4, y2=5, y3=22] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=30, x1=51, x2=6, y1=5, y2=0, y3=21] [L36] EXPR counter++ VAL [counter=31, counter++=30, x1=51, x2=6, y1=5, y2=0, y3=21] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=31] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=31] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=31, x1=51, x2=6, y1=5, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=31, x1=51, x2=6, y1=5, y2=1, y3=20] [L36] EXPR counter++ VAL [counter=32, counter++=31, x1=51, x2=6, y1=5, y2=1, y3=20] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=32] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=32] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=32, x1=51, x2=6, y1=5, y2=1, y3=20] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=32, x1=51, x2=6, y1=5, y2=2, y3=19] [L36] EXPR counter++ VAL [counter=33, counter++=32, x1=51, x2=6, y1=5, y2=2, y3=19] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=33] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=33] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=33, x1=51, x2=6, y1=5, y2=2, y3=19] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=33, x1=51, x2=6, y1=5, y2=3, y3=18] [L36] EXPR counter++ VAL [counter=34, counter++=33, x1=51, x2=6, y1=5, y2=3, y3=18] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=34] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=34] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=34, x1=51, x2=6, y1=5, y2=3, y3=18] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=34, x1=51, x2=6, y1=5, y2=4, y3=17] [L36] EXPR counter++ VAL [counter=35, counter++=34, x1=51, x2=6, y1=5, y2=4, y3=17] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=35] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=35] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=35, x1=51, x2=6, y1=5, y2=4, y3=17] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=35, x1=51, x2=6, y1=5, y2=5, y3=16] [L36] EXPR counter++ VAL [counter=36, counter++=35, x1=51, x2=6, y1=5, y2=5, y3=16] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=36] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=36] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=36, x1=51, x2=6, y1=5, y2=5, y3=16] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=36, x1=51, x2=6, y1=6, y2=0, y3=15] [L36] EXPR counter++ VAL [counter=37, counter++=36, x1=51, x2=6, y1=6, y2=0, y3=15] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=37] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=37] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=37, x1=51, x2=6, y1=6, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=37, x1=51, x2=6, y1=6, y2=1, y3=14] [L36] EXPR counter++ VAL [counter=38, counter++=37, x1=51, x2=6, y1=6, y2=1, y3=14] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=38] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=38] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=38, x1=51, x2=6, y1=6, y2=1, y3=14] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=38, x1=51, x2=6, y1=6, y2=2, y3=13] [L36] EXPR counter++ VAL [counter=39, counter++=38, x1=51, x2=6, y1=6, y2=2, y3=13] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=39] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=39] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=39, x1=51, x2=6, y1=6, y2=2, y3=13] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=39, x1=51, x2=6, y1=6, y2=3, y3=12] [L36] EXPR counter++ VAL [counter=40, counter++=39, x1=51, x2=6, y1=6, y2=3, y3=12] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=40] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=40] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=40, x1=51, x2=6, y1=6, y2=3, y3=12] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=40, x1=51, x2=6, y1=6, y2=4, y3=11] [L36] EXPR counter++ VAL [counter=41, counter++=40, x1=51, x2=6, y1=6, y2=4, y3=11] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=41] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=41] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=41, x1=51, x2=6, y1=6, y2=4, y3=11] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=41, x1=51, x2=6, y1=6, y2=5, y3=10] [L36] EXPR counter++ VAL [counter=42, counter++=41, x1=51, x2=6, y1=6, y2=5, y3=10] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=42] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=42] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=42, x1=51, x2=6, y1=6, y2=5, y3=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=42, x1=51, x2=6, y1=7, y2=0, y3=9] [L36] EXPR counter++ VAL [counter=43, counter++=42, x1=51, x2=6, y1=7, y2=0, y3=9] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=43] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=43] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=43, x1=51, x2=6, y1=7, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=43, x1=51, x2=6, y1=7, y2=1, y3=8] [L36] EXPR counter++ VAL [counter=44, counter++=43, x1=51, x2=6, y1=7, y2=1, y3=8] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=44] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=44] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=44, x1=51, x2=6, y1=7, y2=1, y3=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=44, x1=51, x2=6, y1=7, y2=2, y3=7] [L36] EXPR counter++ VAL [counter=45, counter++=44, x1=51, x2=6, y1=7, y2=2, y3=7] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=45] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=45] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=45, x1=51, x2=6, y1=7, y2=2, y3=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=45, x1=51, x2=6, y1=7, y2=3, y3=6] [L36] EXPR counter++ VAL [counter=46, counter++=45, x1=51, x2=6, y1=7, y2=3, y3=6] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=46] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=46] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=46, x1=51, x2=6, y1=7, y2=3, y3=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=46, x1=51, x2=6, y1=7, y2=4, y3=5] [L36] EXPR counter++ VAL [counter=47, counter++=46, x1=51, x2=6, y1=7, y2=4, y3=5] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=47] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=47] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=47, x1=51, x2=6, y1=7, y2=4, y3=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=47, x1=51, x2=6, y1=7, y2=5, y3=4] [L36] EXPR counter++ VAL [counter=48, counter++=47, x1=51, x2=6, y1=7, y2=5, y3=4] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=48] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=48] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=48, x1=51, x2=6, y1=7, y2=5, y3=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=48, x1=51, x2=6, y1=8, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=49, counter++=48, x1=51, x2=6, y1=8, y2=0, y3=3] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=49] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=49] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=49, x1=51, x2=6, y1=8, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=49, x1=51, x2=6, y1=8, y2=1, y3=2] [L36] EXPR counter++ VAL [counter=50, counter++=49, x1=51, x2=6, y1=8, y2=1, y3=2] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=50] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=50] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=50, x1=51, x2=6, y1=8, y2=1, y3=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=50, x1=51, x2=6, y1=8, y2=2, y3=1] [L36] EXPR counter++ VAL [counter=51, counter++=50, x1=51, x2=6, y1=8, y2=2, y3=1] [L36] COND FALSE !(counter++<50) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=51] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=51] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.0s, OverallIterations: 12, TraceHistogramMax: 51, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1199 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1195 mSDsluCounter, 1232 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 18 IncrementalHoareTripleChecker+Unchecked, 952 mSDsCounter, 444 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1373 IncrementalHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 444 mSolverCounterUnsat, 280 mSDtfsCounter, 1373 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2570 GetRequests, 2097 SyntacticMatches, 49 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8757 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=11, InterpolantAutomatonStates: 323, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 1286 NumberOfCodeBlocks, 1286 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1630 ConstructedInterpolants, 0 QuantifiedInterpolants, 4308 SizeOfPredicates, 98 NumberOfNonLiveVariables, 2115 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 5661/21812 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: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 17, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 30, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 46, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.2s, 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: 17, 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: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, 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: 138, DAG_COMPRESSION_RETAINED_NODES: 50, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 16:07:45,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03df4c8-4616-473f-b286-d4a1e827ed82/bin/utaipan-Xvt2sAort0/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE