./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS --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 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d --- 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-8393723 [2022-11-19 07:59:37,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:59:37,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:59:37,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:59:37,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:59:37,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:59:37,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:59:37,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:59:37,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:59:37,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:59:37,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:59:37,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:59:37,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:59:37,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:59:37,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:59:37,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:59:37,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:59:37,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:59:37,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:59:37,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:59:37,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:59:37,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:59:37,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:59:37,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:59:37,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:59:37,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:59:37,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:59:37,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:59:37,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:59:37,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:59:37,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:59:37,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:59:37,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:59:37,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:59:37,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:59:37,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:59:37,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:59:37,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:59:37,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:59:37,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:59:37,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:59:37,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:59:38,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:59:38,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:59:38,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:59:38,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:59:38,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:59:38,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:59:38,013 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:59:38,014 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:59:38,014 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:59:38,014 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:59:38,015 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:59:38,015 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:59:38,015 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:59:38,016 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:59:38,016 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:59:38,016 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:59:38,017 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:59:38,017 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:59:38,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:59:38,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:59:38,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:59:38,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:59:38,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:59:38,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:59:38,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:59:38,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:59:38,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:59:38,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:59:38,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:59:38,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:59:38,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:59:38,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:59:38,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:38,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:59:38,023 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:59:38,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:59:38,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:59:38,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:59:38,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:59:38,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:59:38,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:59:38,025 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_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d [2022-11-19 07:59:38,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:59:38,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:59:38,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:59:38,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:59:38,390 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:59:38,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2022-11-19 07:59:38,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/data/2fe4f89a6/b8ba66b365ee44899aa3c80d5cdb7dc3/FLAG9254ddac3 [2022-11-19 07:59:39,113 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:59:39,114 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2022-11-19 07:59:39,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/data/2fe4f89a6/b8ba66b365ee44899aa3c80d5cdb7dc3/FLAG9254ddac3 [2022-11-19 07:59:39,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/data/2fe4f89a6/b8ba66b365ee44899aa3c80d5cdb7dc3 [2022-11-19 07:59:39,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:59:39,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:59:39,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:39,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:59:39,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:59:39,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccc0319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39, skipping insertion in model container [2022-11-19 07:59:39,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:59:39,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:59:39,762 WARN L234 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_6975e783-023e-43ae-bf60-bdfab8c8c39a/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2022-11-19 07:59:39,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:39,812 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:59:39,832 WARN L234 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_6975e783-023e-43ae-bf60-bdfab8c8c39a/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2022-11-19 07:59:39,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:39,886 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:59:39,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39 WrapperNode [2022-11-19 07:59:39,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:39,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:39,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:59:39,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:59:39,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,926 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-19 07:59:39,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:39,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:59:39,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:59:39,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:59:39,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,952 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:59:39,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:59:39,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:59:39,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:59:39,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2022-11-19 07:59:39,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:39,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:40,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:59:40,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:59:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:59:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:59:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:59:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:59:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:59:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:59:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:59:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:59:40,166 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:59:40,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:59:40,426 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:59:40,466 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:59:40,466 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:59:40,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:40 BoogieIcfgContainer [2022-11-19 07:59:40,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:59:40,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:59:40,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:59:40,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:59:40,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:39" (1/3) ... [2022-11-19 07:59:40,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe13b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:40, skipping insertion in model container [2022-11-19 07:59:40,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (2/3) ... [2022-11-19 07:59:40,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe13b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:40, skipping insertion in model container [2022-11-19 07:59:40,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:40" (3/3) ... [2022-11-19 07:59:40,499 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2022-11-19 07:59:40,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:59:40,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:59:40,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:59:40,656 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;@38f20ee0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:59:40,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:59:40,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 07:59:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:59:40,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:40,673 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:40,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1295267661, now seen corresponding path program 1 times [2022-11-19 07:59:40,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:40,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845580701] [2022-11-19 07:59:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:40,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:40,827 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:59:40,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307680952] [2022-11-19 07:59:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:40,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:40,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:40,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:59:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:40,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:59:40,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:59:41,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:59:41,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845580701] [2022-11-19 07:59:41,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:59:41,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307680952] [2022-11-19 07:59:41,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307680952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:41,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:41,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:59:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666286262] [2022-11-19 07:59:41,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:59:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:59:41,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:59:41,314 INFO L87 Difference]: Start difference. First operand has 29 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:59:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:41,583 INFO L93 Difference]: Finished difference Result 61 states and 97 transitions. [2022-11-19 07:59:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:59:41,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2022-11-19 07:59:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:41,598 INFO L225 Difference]: With dead ends: 61 [2022-11-19 07:59:41,599 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 07:59:41,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:41,615 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:41,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 108 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:59:41,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 07:59:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-11-19 07:59:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 07:59:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-19 07:59:41,666 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 17 [2022-11-19 07:59:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:41,666 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-19 07:59:41,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:59:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-19 07:59:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:59:41,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:41,669 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:41,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:41,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 07:59:41,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1188978483, now seen corresponding path program 1 times [2022-11-19 07:59:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:41,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391689761] [2022-11-19 07:59:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:41,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:41,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:59:41,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154694770] [2022-11-19 07:59:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:41,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:41,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:41,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:41,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:59:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:42,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:59:42,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:59:42,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:59:42,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391689761] [2022-11-19 07:59:42,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:59:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154694770] [2022-11-19 07:59:42,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154694770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:42,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:42,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:59:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271526759] [2022-11-19 07:59:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:42,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:59:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:59:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:59:42,189 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 07:59:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:42,353 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-11-19 07:59:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:59:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 22 [2022-11-19 07:59:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:42,355 INFO L225 Difference]: With dead ends: 50 [2022-11-19 07:59:42,355 INFO L226 Difference]: Without dead ends: 47 [2022-11-19 07:59:42,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:42,358 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 39 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:42,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-19 07:59:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-11-19 07:59:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:59:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-19 07:59:42,373 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 22 [2022-11-19 07:59:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:42,374 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-19 07:59:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 07:59:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-19 07:59:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:59:42,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:42,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:42,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:59:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:42,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1634696502, now seen corresponding path program 1 times [2022-11-19 07:59:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:42,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351876312] [2022-11-19 07:59:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:42,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:59:42,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506223947] [2022-11-19 07:59:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:42,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:42,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:42,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:42,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:59:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:42,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 07:59:42,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:59:42,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:59:42,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:42,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351876312] [2022-11-19 07:59:42,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:59:42,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506223947] [2022-11-19 07:59:42,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506223947] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:42,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:59:42,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-11-19 07:59:42,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836186592] [2022-11-19 07:59:42,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:42,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:59:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:59:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:42,897 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:59:43,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:43,042 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2022-11-19 07:59:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:59:43,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-11-19 07:59:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:43,048 INFO L225 Difference]: With dead ends: 52 [2022-11-19 07:59:43,049 INFO L226 Difference]: Without dead ends: 50 [2022-11-19 07:59:43,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:59:43,056 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:43,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 66 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-19 07:59:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-19 07:59:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:59:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2022-11-19 07:59:43,097 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 29 [2022-11-19 07:59:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:43,098 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2022-11-19 07:59:43,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:59:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2022-11-19 07:59:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 07:59:43,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:43,103 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:43,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:43,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:43,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1850586486, now seen corresponding path program 1 times [2022-11-19 07:59:43,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:43,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321579452] [2022-11-19 07:59:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:43,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:59:43,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406492716] [2022-11-19 07:59:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:43,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:43,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:43,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:43,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:59:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:43,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:59:43,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 07:59:43,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:59:43,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:43,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321579452] [2022-11-19 07:59:43,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:59:43,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406492716] [2022-11-19 07:59:43,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406492716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:43,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:43,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:59:43,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177173070] [2022-11-19 07:59:43,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:43,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:59:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:43,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:59:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:59:43,539 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-19 07:59:43,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:43,733 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-11-19 07:59:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:59:43,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 39 [2022-11-19 07:59:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:43,741 INFO L225 Difference]: With dead ends: 56 [2022-11-19 07:59:43,742 INFO L226 Difference]: Without dead ends: 54 [2022-11-19 07:59:43,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:43,744 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:43,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 94 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-19 07:59:43,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-19 07:59:43,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:59:43,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2022-11-19 07:59:43,766 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 39 [2022-11-19 07:59:43,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:43,766 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2022-11-19 07:59:43,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-19 07:59:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2022-11-19 07:59:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 07:59:43,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:43,769 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:43,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:43,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:43,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1800198356, now seen corresponding path program 1 times [2022-11-19 07:59:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:43,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638867897] [2022-11-19 07:59:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:43,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:43,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:59:43,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631224481] [2022-11-19 07:59:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:43,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:43,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:43,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:44,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:59:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:44,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:59:44,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 07:59:44,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 07:59:44,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:44,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638867897] [2022-11-19 07:59:44,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:59:44,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631224481] [2022-11-19 07:59:44,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631224481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:44,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [850334654] [2022-11-19 07:59:44,634 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-19 07:59:44,635 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:44,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:44,646 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:44,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:45,804 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2022-11-19 07:59:45,864 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-11-19 07:59:45,866 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:47,850 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1347#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:59:47,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:59:47,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:59:47,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-19 07:59:47,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468580042] [2022-11-19 07:59:47,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:59:47,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:59:47,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:47,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:59:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:59:47,853 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 14 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:59:48,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:48,220 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2022-11-19 07:59:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:59:48,221 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 45 [2022-11-19 07:59:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:48,224 INFO L225 Difference]: With dead ends: 72 [2022-11-19 07:59:48,224 INFO L226 Difference]: Without dead ends: 70 [2022-11-19 07:59:48,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 97 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:59:48,225 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:48,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 94 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:59:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-19 07:59:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2022-11-19 07:59:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:59:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-19 07:59:48,241 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 45 [2022-11-19 07:59:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:48,241 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-19 07:59:48,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:59:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-19 07:59:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 07:59:48,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:48,244 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:48,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:48,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:48,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash 900265930, now seen corresponding path program 1 times [2022-11-19 07:59:48,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:48,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641636434] [2022-11-19 07:59:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:48,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:48,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:59:48,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781677257] [2022-11-19 07:59:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:48,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:48,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:48,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:48,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:59:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:48,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:59:48,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 07:59:48,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-19 07:59:49,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:49,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641636434] [2022-11-19 07:59:49,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:59:49,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781677257] [2022-11-19 07:59:49,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781677257] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:49,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:59:49,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-19 07:59:49,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921281441] [2022-11-19 07:59:49,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:49,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:59:49,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:59:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:59:49,214 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-19 07:59:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:49,480 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2022-11-19 07:59:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:59:49,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 52 [2022-11-19 07:59:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:49,482 INFO L225 Difference]: With dead ends: 58 [2022-11-19 07:59:49,482 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:59:49,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:59:49,484 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:49,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 54 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:59:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:59:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:59:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:59:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:59:49,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2022-11-19 07:59:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:49,487 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:59:49,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-19 07:59:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:59:49,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:59:49,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:59:49,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:49,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:59:49,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:59:50,800 INFO L895 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 100)) [2022-11-19 07:59:50,801 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-11-19 07:59:50,801 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-11-19 07:59:50,802 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-11-19 07:59:50,803 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,804 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,804 INFO L899 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2022-11-19 07:59:50,804 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 07:59:50,808 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,809 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:59:50,809 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-11-19 07:59:50,810 INFO L895 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 100)) [2022-11-19 07:59:50,811 INFO L899 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2022-11-19 07:59:50,811 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,811 INFO L895 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 100))) (or (and .cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1) (let ((.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse2)) .cse0 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse2)) .cse1)))) [2022-11-19 07:59:50,812 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* .cse1 2) |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse1 |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,812 INFO L899 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2022-11-19 07:59:50,812 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,812 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2022-11-19 07:59:50,813 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,813 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 100))) [2022-11-19 07:59:50,813 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-11-19 07:59:50,813 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-11-19 07:59:50,813 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-19 07:59:50,814 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-19 07:59:50,815 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-19 07:59:50,815 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-19 07:59:50,816 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-19 07:59:50,816 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-19 07:59:50,820 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 07:59:50,823 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:59:50,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:59:50 BoogieIcfgContainer [2022-11-19 07:59:50,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:59:50,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:59:50,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:59:50,841 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:59:50,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:40" (3/4) ... [2022-11-19 07:59:50,845 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:59:50,850 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-19 07:59:50,850 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-19 07:59:50,855 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-19 07:59:50,856 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 07:59:50,856 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 07:59:50,856 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:59:50,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:59:50,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:59:50,907 INFO L158 Benchmark]: Toolchain (without parser) took 11472.97ms. Allocated memory was 125.8MB in the beginning and 220.2MB in the end (delta: 94.4MB). Free memory was 85.8MB in the beginning and 119.5MB in the end (delta: -33.8MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. [2022-11-19 07:59:50,907 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:59:50,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.56ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 100.0MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:59:50,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.96ms. Allocated memory is still 125.8MB. Free memory was 100.0MB in the beginning and 98.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:59:50,909 INFO L158 Benchmark]: Boogie Preprocessor took 27.23ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 97.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:59:50,914 INFO L158 Benchmark]: RCFGBuilder took 531.38ms. Allocated memory is still 125.8MB. Free memory was 97.4MB in the beginning and 85.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:59:50,915 INFO L158 Benchmark]: TraceAbstraction took 10350.48ms. Allocated memory was 125.8MB in the beginning and 220.2MB in the end (delta: 94.4MB). Free memory was 84.8MB in the beginning and 122.7MB in the end (delta: -37.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2022-11-19 07:59:50,915 INFO L158 Benchmark]: Witness Printer took 65.57ms. Allocated memory is still 220.2MB. Free memory was 122.7MB in the beginning and 119.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:59:50,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 450.56ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 100.0MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.96ms. Allocated memory is still 125.8MB. Free memory was 100.0MB in the beginning and 98.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.23ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 97.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.38ms. Allocated memory is still 125.8MB. Free memory was 97.4MB in the beginning and 85.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10350.48ms. Allocated memory was 125.8MB in the beginning and 220.2MB in the end (delta: 94.4MB). Free memory was 84.8MB in the beginning and 122.7MB in the end (delta: -37.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Witness Printer took 65.57ms. Allocated memory is still 220.2MB. Free memory was 122.7MB in the beginning and 119.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 6, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 518 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 364 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 665 IncrementalHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 154 mSDtfsCounter, 665 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 292 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=5, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 37 PreInvPairs, 57 NumberOfFragments, 288 HoareAnnotationTreeSize, 37 FomulaSimplifications, 220 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 481 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 25 NumberOfNonLiveVariables, 631 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 337/354 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 <= y && y <= 100 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((x == r + q * y && 1 <= y) && 1 <= r) && b + x == a * y + r + q * y) && y <= 100 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((x == r + q * y && 1 <= y) && b + x == a * y + r + q * y) && y <= 100 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:59:50,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975e783-023e-43ae-bf60-bdfab8c8c39a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE