./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI --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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- 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-5e519f3 [2022-11-03 02:05:02,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:05:02,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:05:02,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:05:02,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:05:02,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:05:02,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:05:02,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:05:02,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:05:02,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:05:02,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:05:02,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:05:02,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:05:02,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:05:02,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:05:03,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:05:03,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:05:03,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:05:03,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:05:03,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:05:03,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:05:03,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:05:03,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:05:03,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:05:03,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:05:03,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:05:03,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:05:03,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:05:03,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:05:03,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:05:03,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:05:03,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:05:03,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:05:03,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:05:03,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:05:03,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:05:03,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:05:03,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:05:03,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:05:03,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:05:03,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:05:03,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:05:03,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:05:03,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:05:03,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:05:03,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:05:03,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:05:03,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:05:03,083 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:05:03,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:05:03,084 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:05:03,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:05:03,085 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:05:03,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:05:03,086 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:05:03,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:05:03,086 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:05:03,086 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:05:03,086 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:05:03,087 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:05:03,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:05:03,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:05:03,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:05:03,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:05:03,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:05:03,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:05:03,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:05:03,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:05:03,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:05:03,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:05:03,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:05:03,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:05:03,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:05:03,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:05:03,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:03,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:05:03,091 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:05:03,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:05:03,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:05:03,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:05:03,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:05:03,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:05:03,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:05:03,092 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_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2022-11-03 02:05:03,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:05:03,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:05:03,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:05:03,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:05:03,437 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:05:03,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-03 02:05:03,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/c5a7bd8bc/a197e99fe6fc41c3b7415d9b5436cce0/FLAG9e4a98a52 [2022-11-03 02:05:03,972 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:05:03,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-03 02:05:03,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/c5a7bd8bc/a197e99fe6fc41c3b7415d9b5436cce0/FLAG9e4a98a52 [2022-11-03 02:05:04,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/c5a7bd8bc/a197e99fe6fc41c3b7415d9b5436cce0 [2022-11-03 02:05:04,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:05:04,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:05:04,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:04,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:05:04,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:05:04,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79026e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04, skipping insertion in model container [2022-11-03 02:05:04,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:05:04,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:05:04,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-03 02:05:04,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:04,614 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:05:04,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-03 02:05:04,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:04,645 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:05:04,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04 WrapperNode [2022-11-03 02:05:04,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:04,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:04,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:05:04,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:05:04,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,677 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-03 02:05:04,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:04,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:05:04,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:05:04,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:05:04,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:05:04,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:05:04,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:05:04,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:05:04,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (1/1) ... [2022-11-03 02:05:04,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:04,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:04,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:05:04,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:05:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:05:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:05:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:05:04,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:05:04,837 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:05:04,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:05:04,978 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:05:05,013 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:05:05,013 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:05:05,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:05:05 BoogieIcfgContainer [2022-11-03 02:05:05,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:05:05,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:05:05,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:05:05,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:05:05,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:05:04" (1/3) ... [2022-11-03 02:05:05,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed84fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:05:05, skipping insertion in model container [2022-11-03 02:05:05,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:04" (2/3) ... [2022-11-03 02:05:05,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed84fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:05:05, skipping insertion in model container [2022-11-03 02:05:05,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:05:05" (3/3) ... [2022-11-03 02:05:05,032 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2022-11-03 02:05:05,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:05:05,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:05:05,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:05:05,173 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;@49d66baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:05:05,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:05:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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) [2022-11-03 02:05:05,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:05:05,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:05,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:05,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:05,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1394921896, now seen corresponding path program 1 times [2022-11-03 02:05:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:05,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636911885] [2022-11-03 02:05:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:05,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:05,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636911885] [2022-11-03 02:05:05,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636911885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:05,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:05,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:05:05,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068332108] [2022-11-03 02:05:05,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:05,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:05:05,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:05:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:05:05,668 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-03 02:05:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:05,843 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2022-11-03 02:05:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:05:05,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13 [2022-11-03 02:05:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:05,854 INFO L225 Difference]: With dead ends: 89 [2022-11-03 02:05:05,854 INFO L226 Difference]: Without dead ends: 73 [2022-11-03 02:05:05,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:05:05,860 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 120 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:05,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 129 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:05:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-03 02:05:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 19. [2022-11-03 02:05:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2022-11-03 02:05:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-03 02:05:05,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2022-11-03 02:05:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:05,894 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-03 02:05:05,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-03 02:05:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-03 02:05:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:05:05,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:05,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:05,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:05:05,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:05,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1411932557, now seen corresponding path program 1 times [2022-11-03 02:05:05,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:05,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64192175] [2022-11-03 02:05:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:05:05,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:05:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:05:05,966 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:05:05,967 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:05:05,970 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:05:05,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:05:05,978 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 02:05:05,982 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:05:06,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:05:06 BoogieIcfgContainer [2022-11-03 02:05:06,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:05:06,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:05:06,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:05:06,025 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:05:06,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:05:05" (3/4) ... [2022-11-03 02:05:06,029 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:05:06,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:05:06,031 INFO L158 Benchmark]: Toolchain (without parser) took 1653.91ms. Allocated memory is still 121.6MB. Free memory was 88.1MB in the beginning and 48.8MB in the end (delta: 39.2MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2022-11-03 02:05:06,031 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 86.0MB. Free memory was 56.7MB in the beginning and 56.7MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:05:06,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.71ms. Allocated memory is still 121.6MB. Free memory was 88.1MB in the beginning and 98.4MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:05:06,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.36ms. Allocated memory is still 121.6MB. Free memory was 98.3MB in the beginning and 96.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:05:06,039 INFO L158 Benchmark]: Boogie Preprocessor took 20.82ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 95.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:05:06,039 INFO L158 Benchmark]: RCFGBuilder took 316.63ms. Allocated memory is still 121.6MB. Free memory was 95.4MB in the beginning and 83.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:05:06,040 INFO L158 Benchmark]: TraceAbstraction took 1006.08ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 49.2MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-03 02:05:06,040 INFO L158 Benchmark]: Witness Printer took 4.86ms. Allocated memory is still 121.6MB. Free memory was 49.2MB in the beginning and 48.8MB in the end (delta: 391.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:05:06,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 86.0MB. Free memory was 56.7MB in the beginning and 56.7MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.71ms. Allocated memory is still 121.6MB. Free memory was 88.1MB in the beginning and 98.4MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.36ms. Allocated memory is still 121.6MB. Free memory was 98.3MB in the beginning and 96.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.82ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 95.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.63ms. Allocated memory is still 121.6MB. Free memory was 95.4MB in the beginning and 83.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1006.08ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 49.2MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.86ms. Allocated memory is still 121.6MB. Free memory was 49.2MB in the beginning and 48.8MB in the end (delta: 391.2kB). There was no memory consumed. 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 - UnprovableResult [Line: 66]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 47. Possible FailurePath: [L1] int __return_main; [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 VAL [__return_main=0, main__i=0] [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; VAL [__return_main=0, main__D=53, main__i=0, main__X=54] [L28] COND TRUE main__X >= -128.0 VAL [__return_main=0, main__D=53, main__i=0, main__X=54] [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L37] COND TRUE main__D >= 0.0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__X=54] [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D [L52] int main____CPAchecker_TMP_2; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L53] COND FALSE !(main__Y >= -129.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L79] main____CPAchecker_TMP_2 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L64] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L66] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 40 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 54 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:05:06,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI --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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- 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-5e519f3 [2022-11-03 02:05:08,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:05:08,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:05:08,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:05:08,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:05:08,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:05:08,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:05:08,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:05:08,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:05:08,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:05:08,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:05:08,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:05:08,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:05:08,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:05:08,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:05:08,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:05:08,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:05:08,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:05:08,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:05:08,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:05:08,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:05:08,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:05:08,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:05:08,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:05:08,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:05:08,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:05:08,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:05:08,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:05:08,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:05:08,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:05:08,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:05:08,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:05:08,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:05:08,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:05:08,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:05:08,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:05:08,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:05:08,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:05:08,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:05:08,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:05:08,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:05:08,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:05:08,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:05:08,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:05:08,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:05:08,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:05:08,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:05:08,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:05:08,521 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:05:08,521 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:05:08,521 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:05:08,521 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:05:08,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:05:08,523 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:05:08,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:05:08,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:05:08,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:05:08,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:05:08,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:05:08,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:05:08,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:05:08,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:05:08,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:05:08,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:05:08,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:05:08,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:05:08,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:05:08,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:05:08,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:05:08,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:05:08,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:05:08,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:08,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:05:08,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:05:08,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:05:08,528 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:05:08,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:05:08,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:05:08,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:05:08,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:05:08,530 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2022-11-03 02:05:08,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:05:08,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:05:08,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:05:08,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:05:08,885 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:05:08,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-03 02:05:08,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/107eff694/53eb06d7d69b4b8cb2bc53915fde9e52/FLAG8de8ffe78 [2022-11-03 02:05:09,464 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:05:09,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-03 02:05:09,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/107eff694/53eb06d7d69b4b8cb2bc53915fde9e52/FLAG8de8ffe78 [2022-11-03 02:05:09,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/data/107eff694/53eb06d7d69b4b8cb2bc53915fde9e52 [2022-11-03 02:05:09,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:05:09,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:05:09,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:09,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:05:09,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:05:09,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:09" (1/1) ... [2022-11-03 02:05:09,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bddebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:09, skipping insertion in model container [2022-11-03 02:05:09,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:09" (1/1) ... [2022-11-03 02:05:09,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:05:09,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:05:10,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-03 02:05:10,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:10,107 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:05:10,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-03 02:05:10,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:10,192 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:05:10,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10 WrapperNode [2022-11-03 02:05:10,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:10,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:10,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:05:10,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:05:10,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,231 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-03 02:05:10,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:10,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:05:10,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:05:10,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:05:10,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:05:10,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:05:10,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:05:10,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:05:10,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (1/1) ... [2022-11-03 02:05:10,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:10,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:10,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:05:10,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:05:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:05:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:05:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:05:10,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:05:10,414 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:05:10,416 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:05:11,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:05:11,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:05:11,568 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:05:11,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:05:11 BoogieIcfgContainer [2022-11-03 02:05:11,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:05:11,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:05:11,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:05:11,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:05:11,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:05:09" (1/3) ... [2022-11-03 02:05:11,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d9c45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:05:11, skipping insertion in model container [2022-11-03 02:05:11,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:10" (2/3) ... [2022-11-03 02:05:11,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d9c45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:05:11, skipping insertion in model container [2022-11-03 02:05:11,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:05:11" (3/3) ... [2022-11-03 02:05:11,580 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2022-11-03 02:05:11,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:05:11,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:05:11,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:05:11,663 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;@69d206a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:05:11,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:05:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2022-11-03 02:05:11,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:05:11,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:11,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:11,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash -34829450, now seen corresponding path program 1 times [2022-11-03 02:05:11,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:05:11,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848928926] [2022-11-03 02:05:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:11,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:05:11,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:05:11,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:05:11,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:05:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:11,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:05:11,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:11,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:05:11,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:05:11,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848928926] [2022-11-03 02:05:11,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848928926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:11,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:11,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:05:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790693396] [2022-11-03 02:05:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:05:11,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:05:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:05:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:05:12,031 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-03 02:05:12,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:12,117 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-11-03 02:05:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:05:12,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 16 [2022-11-03 02:05:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:12,127 INFO L225 Difference]: With dead ends: 51 [2022-11-03 02:05:12,128 INFO L226 Difference]: Without dead ends: 40 [2022-11-03 02:05:12,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:05:12,133 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 53 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:12,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 122 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:05:12,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-03 02:05:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-03 02:05:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2022-11-03 02:05:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-11-03 02:05:12,168 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2022-11-03 02:05:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:12,168 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-11-03 02:05:12,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-03 02:05:12,169 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-11-03 02:05:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:05:12,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:12,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:12,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:12,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:05:12,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:12,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:12,384 INFO L85 PathProgramCache]: Analyzing trace with hash -17818789, now seen corresponding path program 1 times [2022-11-03 02:05:12,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:05:12,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652540886] [2022-11-03 02:05:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:12,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:05:12,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:05:12,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:05:12,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:05:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:12,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:05:12,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:20,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:05:20,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:05:20,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652540886] [2022-11-03 02:05:20,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652540886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:20,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:20,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:05:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437679718] [2022-11-03 02:05:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:20,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:05:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:05:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:05:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2022-11-03 02:05:20,450 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-03 02:05:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:30,993 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2022-11-03 02:05:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:05:30,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 16 [2022-11-03 02:05:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:31,000 INFO L225 Difference]: With dead ends: 66 [2022-11-03 02:05:31,000 INFO L226 Difference]: Without dead ends: 45 [2022-11-03 02:05:31,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=23, Invalid=32, Unknown=1, NotChecked=0, Total=56 [2022-11-03 02:05:31,002 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:31,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 83 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 29 Unchecked, 6.3s Time] [2022-11-03 02:05:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-03 02:05:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2022-11-03 02:05:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 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) [2022-11-03 02:05:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2022-11-03 02:05:31,011 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 16 [2022-11-03 02:05:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:31,012 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2022-11-03 02:05:31,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-03 02:05:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2022-11-03 02:05:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:05:31,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:31,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:31,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:31,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:05:31,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1271663018, now seen corresponding path program 1 times [2022-11-03 02:05:31,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:05:31,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546568249] [2022-11-03 02:05:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:31,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:05:31,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:05:31,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:05:31,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:05:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:31,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:05:31,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:31,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:05:31,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:05:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546568249] [2022-11-03 02:05:31,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546568249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:31,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:31,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:05:31,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231513947] [2022-11-03 02:05:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:31,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:05:31,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:05:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:05:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:05:31,379 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-11-03 02:05:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:31,573 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2022-11-03 02:05:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:05:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2022-11-03 02:05:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:31,580 INFO L225 Difference]: With dead ends: 56 [2022-11-03 02:05:31,580 INFO L226 Difference]: Without dead ends: 33 [2022-11-03 02:05:31,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:05:31,582 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:31,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:05:31,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-03 02:05:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-03 02:05:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 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) [2022-11-03 02:05:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-03 02:05:31,589 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 16 [2022-11-03 02:05:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:31,590 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-03 02:05:31,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-11-03 02:05:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-03 02:05:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:05:31,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:31,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:31,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:31,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:05:31,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1069421883, now seen corresponding path program 1 times [2022-11-03 02:05:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:05:31,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778049753] [2022-11-03 02:05:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:31,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:05:31,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:05:31,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:05:31,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:05:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:31,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:05:31,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:37,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:05:37,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:05:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778049753] [2022-11-03 02:05:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778049753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:37,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:37,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:05:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55178935] [2022-11-03 02:05:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:37,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:05:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:05:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:05:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:05:37,393 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-03 02:05:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:46,478 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-03 02:05:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:05:46,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2022-11-03 02:05:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:46,488 INFO L225 Difference]: With dead ends: 67 [2022-11-03 02:05:46,488 INFO L226 Difference]: Without dead ends: 47 [2022-11-03 02:05:46,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:05:46,490 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:46,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 41 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 24 Unchecked, 6.1s Time] [2022-11-03 02:05:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-03 02:05:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2022-11-03 02:05:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 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) [2022-11-03 02:05:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-11-03 02:05:46,497 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 17 [2022-11-03 02:05:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:46,497 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-11-03 02:05:46,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-03 02:05:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-11-03 02:05:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:05:46,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:46,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:46,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:46,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:05:46,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:46,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1450538051, now seen corresponding path program 1 times [2022-11-03 02:05:46,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:05:46,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358941709] [2022-11-03 02:05:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:46,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:05:46,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:05:46,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:05:46,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:05:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:46,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:05:46,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:05:50,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:05:50,723 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:05:50,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358941709] [2022-11-03 02:05:50,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358941709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:50,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:50,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:05:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783942267] [2022-11-03 02:05:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:05:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:05:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:05:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:05:50,726 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-03 02:06:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:09,935 INFO L93 Difference]: Finished difference Result 128 states and 160 transitions. [2022-11-03 02:06:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:06:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) Word has length 17 [2022-11-03 02:06:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:09,946 INFO L225 Difference]: With dead ends: 128 [2022-11-03 02:06:09,946 INFO L226 Difference]: Without dead ends: 108 [2022-11-03 02:06:09,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:06:09,947 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 74 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:09,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 54 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-03 02:06:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-03 02:06:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 49. [2022-11-03 02:06:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 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) [2022-11-03 02:06:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-03 02:06:09,965 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-11-03 02:06:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:09,965 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-03 02:06:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-03 02:06:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-03 02:06:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:06:09,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:09,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:09,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:10,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:06:10,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1069229389, now seen corresponding path program 1 times [2022-11-03 02:06:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:10,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805829291] [2022-11-03 02:06:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:10,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:10,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:10,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:10,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:06:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:10,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:06:10,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:19,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:06:19,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:06:19,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805829291] [2022-11-03 02:06:19,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805829291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:19,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:19,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:06:19,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666700925] [2022-11-03 02:06:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:19,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:06:19,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:06:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:06:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:06:19,215 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-03 02:06:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:29,418 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2022-11-03 02:06:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:06:29,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) Word has length 17 [2022-11-03 02:06:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:29,431 INFO L225 Difference]: With dead ends: 116 [2022-11-03 02:06:29,431 INFO L226 Difference]: Without dead ends: 87 [2022-11-03 02:06:29,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:06:29,433 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:29,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 59 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 18 Unchecked, 7.6s Time] [2022-11-03 02:06:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-03 02:06:29,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 49. [2022-11-03 02:06:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 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) [2022-11-03 02:06:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-03 02:06:29,443 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-11-03 02:06:29,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:29,444 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-03 02:06:29,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-03 02:06:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-03 02:06:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:06:29,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:29,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:29,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-03 02:06:29,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:06:29,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1175383176, now seen corresponding path program 1 times [2022-11-03 02:06:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:29,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829851999] [2022-11-03 02:06:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:29,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:29,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:29,663 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:29,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:06:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:29,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:06:29,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:29,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:06:29,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:06:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829851999] [2022-11-03 02:06:29,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829851999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:29,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:29,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:29,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629255995] [2022-11-03 02:06:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:29,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:29,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:06:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:29,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:29,764 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-03 02:06:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:29,875 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2022-11-03 02:06:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2022-11-03 02:06:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:29,876 INFO L225 Difference]: With dead ends: 75 [2022-11-03 02:06:29,876 INFO L226 Difference]: Without dead ends: 35 [2022-11-03 02:06:29,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:29,878 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:29,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-03 02:06:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-03 02:06:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 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) [2022-11-03 02:06:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-03 02:06:29,884 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 17 [2022-11-03 02:06:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:29,885 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-03 02:06:29,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-03 02:06:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-03 02:06:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:06:29,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:29,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:29,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:30,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:06:30,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1724506925, now seen corresponding path program 1 times [2022-11-03 02:06:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374651072] [2022-11-03 02:06:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:30,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:30,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:30,109 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:30,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:06:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:30,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:06:30,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:39,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:06:39,211 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:06:39,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374651072] [2022-11-03 02:06:39,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374651072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:39,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:39,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:06:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821683763] [2022-11-03 02:06:39,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:39,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:06:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:06:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:06:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:06:39,213 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-03 02:06:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:46,442 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2022-11-03 02:06:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:06:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) Word has length 18 [2022-11-03 02:06:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:46,452 INFO L225 Difference]: With dead ends: 58 [2022-11-03 02:06:46,452 INFO L226 Difference]: Without dead ends: 36 [2022-11-03 02:06:46,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:06:46,455 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:46,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 19 Unchecked, 4.4s Time] [2022-11-03 02:06:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-03 02:06:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-11-03 02:06:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 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) [2022-11-03 02:06:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-03 02:06:46,462 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 18 [2022-11-03 02:06:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:46,462 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-03 02:06:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-03 02:06:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-03 02:06:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:06:46,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:46,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:46,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:46,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:06:46,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash -66815887, now seen corresponding path program 1 times [2022-11-03 02:06:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:46,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615303290] [2022-11-03 02:06:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:46,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:46,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:46,679 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:46,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:06:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:46,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:06:46,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:10,374 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_8| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse2 .cse1) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_8| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-11-03 02:08:12,388 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_8| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse2 .cse1) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_8| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true [2022-11-03 02:09:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:09:34,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:10:25,298 WARN L234 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 20 DAG size of output: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:13,492 WARN L234 SmtUtils]: Spent 9.37s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:26,377 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (let ((.cse1 (fp.neg .cse3)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1|))) (or (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse1)))) (not (fp.geq .cse2 .cse1)) (not (fp.leq .cse2 .cse3))))) is different from false [2022-11-03 02:12:28,398 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (let ((.cse1 (fp.neg .cse3)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1|))) (or (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse1)))) (not (fp.geq .cse2 .cse1)) (not (fp.leq .cse2 .cse3))))) is different from true [2022-11-03 02:12:55,269 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__S~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode .cse4)) (.cse2 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 .cse2)) (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq .cse3 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse4 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse2) (not (fp.geq .cse3 (_ +zero 11 53)))))) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |c_ULTIMATE.start_main_~main__D~0#1|))))))) is different from true [2022-11-03 02:13:10,309 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode .cse0)) (.cse1 (fp.neg .cse4))) (or (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse1) (not (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (not (fp.geq .cse2 (_ +zero 11 53)))))) (not (fp.leq .cse3 .cse4)) (not (fp.geq .cse3 .cse1)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |c_ULTIMATE.start_main_~main__D~0#1|))))))) is different from true [2022-11-03 02:13:29,779 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode .cse0)) (.cse1 (fp.neg .cse5))) (or (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse1) (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 (_ +zero 11 53)))))) (not (fp.leq .cse4 .cse5)) (not (fp.leq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__D~0#1|) .cse3)) (not (fp.geq .cse4 .cse1)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |c_ULTIMATE.start_main_~main__D~0#1|))))))) is different from false [2022-11-03 02:13:31,810 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode .cse0)) (.cse1 (fp.neg .cse5))) (or (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse1) (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 (_ +zero 11 53)))))) (not (fp.leq .cse4 .cse5)) (not (fp.leq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__D~0#1|) .cse3)) (not (fp.geq .cse4 .cse1)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |c_ULTIMATE.start_main_~main__D~0#1|))))))) is different from true [2022-11-03 02:13:53,548 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse2 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode .cse2)) (.cse3 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse3) (not (fp.leq .cse4 .cse5)) (not (fp.geq .cse4 (_ +zero 11 53)))))) (not (fp.geq .cse6 (_ +zero 11 53))) (not (fp.leq .cse6 .cse5)) (not (fp.geq .cse0 .cse3)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))))) is different from false [2022-11-03 02:13:55,580 WARN L855 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse2 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode .cse2)) (.cse3 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse3) (not (fp.leq .cse4 .cse5)) (not (fp.geq .cse4 (_ +zero 11 53)))))) (not (fp.geq .cse6 (_ +zero 11 53))) (not (fp.leq .cse6 .cse5)) (not (fp.geq .cse0 .cse3)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))))) is different from true [2022-11-03 02:15:41,439 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) |ULTIMATE.start_main_~main__D~0#1|) |v_ULTIMATE.start_main_~main__D~0#1_14|)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (not (fp.leq .cse1 .cse2)) (not (fp.leq .cse0 .cse2)) (not (fp.geq .cse1 (_ +zero 11 53))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))) is different from false [2022-11-03 02:15:43,459 WARN L855 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) |ULTIMATE.start_main_~main__D~0#1|) |v_ULTIMATE.start_main_~main__D~0#1_14|)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (not (fp.leq .cse1 .cse2)) (not (fp.leq .cse0 .cse2)) (not (fp.geq .cse1 (_ +zero 11 53))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))) is different from true [2022-11-03 02:15:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-03 02:15:43,461 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:15:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615303290] [2022-11-03 02:15:43,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615303290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:15:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [563003012] [2022-11-03 02:15:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:43,462 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:15:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:15:43,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:15:43,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b1d2ddb-c61b-44fd-9c03-33a84174b46c/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:15:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:44,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:15:44,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:17:19,588 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-11-03 02:17:21,611 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true [2022-11-03 02:18:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:18:33,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:20:37,311 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__S~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode .cse3)) (.cse4 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (forall ((|v_ULTIMATE.start_main_~main__D~0#1_19| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_19|))) (or (not (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (not (fp.geq .cse2 (_ +zero 11 53))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse3 |v_ULTIMATE.start_main_~main__D~0#1_19|)) .cse4)))) (not (fp.geq .cse0 .cse4))))) is different from true