./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 942fc1721d9d68198092543c6d2644725032e77c472db86e1b213e7c4933ab1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:06:08,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:06:08,813 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:06:08,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:06:08,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:06:08,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:06:08,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:06:08,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:06:08,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:06:08,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:06:08,843 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:06:08,844 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:06:08,844 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:06:08,845 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:06:08,845 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:06:08,846 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:06:08,846 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:06:08,847 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:06:08,847 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:06:08,848 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:06:08,848 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:06:08,849 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:06:08,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:06:08,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:06:08,851 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:06:08,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:06:08,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:06:08,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:06:08,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:06:08,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:06:08,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:06:08,853 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:06:08,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:06:08,854 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:06:08,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:06:08,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:06:08,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:06:08,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:06:08,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:06:08,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:06:08,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:06:08,856 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:06:08,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:06:08,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:06:08,856 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:06:08,857 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:06:08,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:06:08,857 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 942fc1721d9d68198092543c6d2644725032e77c472db86e1b213e7c4933ab1c [2023-12-02 15:06:09,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:06:09,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:06:09,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:06:09,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:06:09,104 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:06:09,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i [2023-12-02 15:06:11,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:06:12,016 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:06:12,017 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i [2023-12-02 15:06:12,026 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data/c8cee1db0/8c687c83d6354a69aefe372360303643/FLAGd743bcea3 [2023-12-02 15:06:12,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data/c8cee1db0/8c687c83d6354a69aefe372360303643 [2023-12-02 15:06:12,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:06:12,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:06:12,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:06:12,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:06:12,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:06:12,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1ad30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12, skipping insertion in model container [2023-12-02 15:06:12,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,083 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:06:12,230 WARN L240 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_b40d037f-a7e9-493b-9cc5-ff3530276b48/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i[915,928] [2023-12-02 15:06:12,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:06:12,267 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:06:12,281 WARN L240 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_b40d037f-a7e9-493b-9cc5-ff3530276b48/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i[915,928] [2023-12-02 15:06:12,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:06:12,308 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:06:12,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12 WrapperNode [2023-12-02 15:06:12,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:06:12,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:06:12,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:06:12,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:06:12,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,346 INFO L138 Inliner]: procedures = 26, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 65 [2023-12-02 15:06:12,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:06:12,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:06:12,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:06:12,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:06:12,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:06:12,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:06:12,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:06:12,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:06:12,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (1/1) ... [2023-12-02 15:06:12,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:06:12,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:12,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:06:12,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:06:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:06:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:06:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:06:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:06:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:06:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:06:12,504 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:06:12,507 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:06:12,650 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:06:12,720 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:06:12,720 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:06:12,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:12 BoogieIcfgContainer [2023-12-02 15:06:12,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:06:12,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:06:12,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:06:12,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:06:12,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:06:12" (1/3) ... [2023-12-02 15:06:12,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b7924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:06:12, skipping insertion in model container [2023-12-02 15:06:12,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:12" (2/3) ... [2023-12-02 15:06:12,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b7924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:06:12, skipping insertion in model container [2023-12-02 15:06:12,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:12" (3/3) ... [2023-12-02 15:06:12,731 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-25.i [2023-12-02 15:06:12,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:06:12,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:06:12,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:06:12,795 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=LoopHeads, 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;@1a5c843, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:06:12,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:06:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:06:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:06:12,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:12,805 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:12,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:12,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:12,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1897922894, now seen corresponding path program 1 times [2023-12-02 15:06:12,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:12,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538835044] [2023-12-02 15:06:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:12,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:06:12,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:06:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:06:13,022 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:06:13,024 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:06:13,025 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:06:13,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:06:13,032 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:06:13,036 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:06:13,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:06:13 BoogieIcfgContainer [2023-12-02 15:06:13,078 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:06:13,078 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:06:13,078 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:06:13,079 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:06:13,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:12" (3/4) ... [2023-12-02 15:06:13,081 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:06:13,082 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:06:13,083 INFO L158 Benchmark]: Toolchain (without parser) took 1037.13ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 137.6MB in the end (delta: -7.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:13,083 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:13,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.64ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 119.1MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:06:13,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.69ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:06:13,085 INFO L158 Benchmark]: Boogie Preprocessor took 25.71ms. Allocated memory is still 167.8MB. Free memory was 117.0MB in the beginning and 115.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:13,085 INFO L158 Benchmark]: RCFGBuilder took 348.16ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 100.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:06:13,086 INFO L158 Benchmark]: TraceAbstraction took 353.00ms. Allocated memory is still 167.8MB. Free memory was 99.7MB in the beginning and 137.6MB in the end (delta: -37.9MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-12-02 15:06:13,086 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 167.8MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:13,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.64ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 119.1MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.69ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.71ms. Allocated memory is still 167.8MB. Free memory was 117.0MB in the beginning and 115.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.16ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 100.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 353.00ms. Allocated memory is still 167.8MB. Free memory was 99.7MB in the beginning and 137.6MB in the end (delta: -37.9MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 167.8MB. Free memory is still 137.6MB. 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: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 36, overapproximation of someUnaryDOUBLEoperation at line 33. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 0.742; [L23] unsigned char var_1_2 = 1; [L24] unsigned char var_1_3 = 0; [L25] double var_1_4 = 1.625; [L26] double var_1_5 = 8.25; [L65] isInitial = 1 [L66] FCALL initially() [L67] COND TRUE 1 [L68] FCALL updateLastVariables() [L69] CALL updateVariables() [L47] var_1_2 = __VERIFIER_nondet_uchar() [L48] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=371/500, var_1_3=0, var_1_4=13/8, var_1_5=33/4] [L20] COND FALSE !(!cond) [L48] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_1=371/500, var_1_3=0, var_1_4=13/8, var_1_5=33/4] [L49] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=0, var_1_4=13/8, var_1_5=33/4] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=0, var_1_4=13/8, var_1_5=33/4] [L50] var_1_3 = __VERIFIER_nondet_uchar() [L51] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=371/500, var_1_2=1, var_1_4=13/8, var_1_5=33/4] [L20] COND FALSE !(!cond) [L51] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_1=371/500, var_1_2=1, var_1_4=13/8, var_1_5=33/4] [L52] CALL assume_abort_if_not(var_1_3 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=1, var_1_4=13/8, var_1_5=33/4] [L20] COND FALSE !(!cond) [L52] RET assume_abort_if_not(var_1_3 <= 1) VAL [isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=1, var_1_4=13/8, var_1_5=33/4] [L53] var_1_4 = __VERIFIER_nondet_double() [L54] CALL assume_abort_if_not((var_1_4 >= -922337.2036854765600e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=1, var_1_5=33/4] [L20] COND FALSE !(!cond) [L54] RET assume_abort_if_not((var_1_4 >= -922337.2036854765600e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=1, var_1_5=33/4] [L55] var_1_5 = __VERIFIER_nondet_double() [L56] CALL assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=1] [L20] COND FALSE !(!cond) [L56] RET assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=371/500, var_1_2=1, var_1_3=1] [L69] RET updateVariables() [L70] CALL step() [L30] COND TRUE \read(var_1_2) [L31] COND FALSE !(! var_1_3) [L36] COND FALSE !(var_1_5 <= var_1_4) [L39] var_1_1 = 199.5 [L70] RET step() [L71] CALL, EXPR property() [L61-L62] return var_1_2 ? ((! var_1_3) ? (var_1_3 ? (var_1_1 == ((double) ((((var_1_4) < (((((var_1_5) < 0 ) ? -(var_1_5) : (var_1_5))))) ? (var_1_4) : (((((var_1_5) < 0 ) ? -(var_1_5) : (var_1_5)))))))) : 1) : ((var_1_5 <= var_1_4) ? (var_1_1 == ((double) var_1_4)) : (var_1_1 == ((double) 199.5)))) : (var_1_1 == ((double) var_1_5)) ; [L71] RET, EXPR property() [L71] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=399/2, var_1_2=1, var_1_3=1, var_1_4=399/2, var_1_5=399/2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=399/2, var_1_2=1, var_1_3=1, var_1_4=399/2, var_1_5=399/2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2023-12-02 15:06:13,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/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_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 942fc1721d9d68198092543c6d2644725032e77c472db86e1b213e7c4933ab1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:06:15,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:06:15,090 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:06:15,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:06:15,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:06:15,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:06:15,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:06:15,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:06:15,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:06:15,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:06:15,126 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:06:15,126 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:06:15,127 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:06:15,127 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:06:15,128 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:06:15,128 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:06:15,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:06:15,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:06:15,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:06:15,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:06:15,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:06:15,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:06:15,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:06:15,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:06:15,133 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:06:15,134 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:06:15,134 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:06:15,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:06:15,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:06:15,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:06:15,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:06:15,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:06:15,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:06:15,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:06:15,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:06:15,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:06:15,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:06:15,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:06:15,138 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:06:15,138 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:06:15,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:06:15,139 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:06:15,139 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:06:15,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:06:15,140 INFO L153 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_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 942fc1721d9d68198092543c6d2644725032e77c472db86e1b213e7c4933ab1c [2023-12-02 15:06:15,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:06:15,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:06:15,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:06:15,450 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:06:15,451 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:06:15,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i [2023-12-02 15:06:18,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:06:18,431 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:06:18,431 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i [2023-12-02 15:06:18,438 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data/480b7b6b0/ed3bc77f57974fcb9a3870a71e7fb275/FLAG882dff3a6 [2023-12-02 15:06:18,450 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/data/480b7b6b0/ed3bc77f57974fcb9a3870a71e7fb275 [2023-12-02 15:06:18,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:06:18,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:06:18,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:06:18,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:06:18,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:06:18,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bd566d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18, skipping insertion in model container [2023-12-02 15:06:18,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,489 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:06:18,652 WARN L240 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_b40d037f-a7e9-493b-9cc5-ff3530276b48/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i[915,928] [2023-12-02 15:06:18,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:06:18,696 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:06:18,711 WARN L240 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_b40d037f-a7e9-493b-9cc5-ff3530276b48/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-25.i[915,928] [2023-12-02 15:06:18,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:06:18,745 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:06:18,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18 WrapperNode [2023-12-02 15:06:18,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:06:18,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:06:18,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:06:18,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:06:18,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,794 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 65 [2023-12-02 15:06:18,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:06:18,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:06:18,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:06:18,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:06:18,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:06:18,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:06:18,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:06:18,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:06:18,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (1/1) ... [2023-12-02 15:06:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:06:18,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:18,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:06:18,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:06:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:06:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:06:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:06:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:06:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:06:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:06:19,000 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:06:19,003 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:06:19,193 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:06:19,232 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:06:19,232 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:06:19,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:19 BoogieIcfgContainer [2023-12-02 15:06:19,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:06:19,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:06:19,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:06:19,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:06:19,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:06:18" (1/3) ... [2023-12-02 15:06:19,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733f2566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:06:19, skipping insertion in model container [2023-12-02 15:06:19,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:18" (2/3) ... [2023-12-02 15:06:19,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733f2566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:06:19, skipping insertion in model container [2023-12-02 15:06:19,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:19" (3/3) ... [2023-12-02 15:06:19,244 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-25.i [2023-12-02 15:06:19,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:06:19,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:06:19,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:06:19,327 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=LoopHeads, 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;@50fad59d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:06:19,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:06:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:06:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 15:06:19,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:19,343 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:19,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:19,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1419770461, now seen corresponding path program 1 times [2023-12-02 15:06:19,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904388181] [2023-12-02 15:06:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:19,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:19,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:19,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:19,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 15:06:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:19,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:06:19,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 15:06:19,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:19,525 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904388181] [2023-12-02 15:06:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904388181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:19,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:19,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:06:19,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999136262] [2023-12-02 15:06:19,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:19,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:06:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:06:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:06:19,563 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 15:06:19,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:19,610 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2023-12-02 15:06:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:06:19,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2023-12-02 15:06:19,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:19,621 INFO L225 Difference]: With dead ends: 51 [2023-12-02 15:06:19,621 INFO L226 Difference]: Without dead ends: 25 [2023-12-02 15:06:19,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:06:19,628 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:19,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:06:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-02 15:06:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-02 15:06:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:06:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-12-02 15:06:19,669 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 40 [2023-12-02 15:06:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:19,670 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-12-02 15:06:19,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 15:06:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-12-02 15:06:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 15:06:19,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:19,673 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:19,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:06:19,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:19,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:19,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -770560167, now seen corresponding path program 1 times [2023-12-02 15:06:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752440954] [2023-12-02 15:06:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:19,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:19,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:19,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:19,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 15:06:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:20,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:06:20,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 15:06:27,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:27,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:27,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752440954] [2023-12-02 15:06:27,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752440954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:27,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:27,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:06:27,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669995902] [2023-12-02 15:06:27,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:27,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:06:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:06:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:06:27,902 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:28,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:28,596 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-12-02 15:06:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:06:28,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2023-12-02 15:06:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:28,598 INFO L225 Difference]: With dead ends: 37 [2023-12-02 15:06:28,598 INFO L226 Difference]: Without dead ends: 35 [2023-12-02 15:06:28,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:06:28,600 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:28,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 67 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:06:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-02 15:06:28,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-12-02 15:06:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:06:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-12-02 15:06:28,607 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 40 [2023-12-02 15:06:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:28,608 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-12-02 15:06:28,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-12-02 15:06:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 15:06:28,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:28,609 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:28,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:06:28,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:28,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:28,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1918328489, now seen corresponding path program 1 times [2023-12-02 15:06:28,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:28,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396601288] [2023-12-02 15:06:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:28,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:28,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:28,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:28,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 15:06:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:28,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:06:28,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 15:06:28,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:28,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396601288] [2023-12-02 15:06:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396601288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:28,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:28,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:06:28,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095179760] [2023-12-02 15:06:28,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:28,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:06:28,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:06:28,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:06:28,889 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:28,946 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2023-12-02 15:06:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:06:28,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2023-12-02 15:06:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:28,948 INFO L225 Difference]: With dead ends: 74 [2023-12-02 15:06:28,948 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 15:06:28,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:06:28,950 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:28,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 55 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:06:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 15:06:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2023-12-02 15:06:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:06:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-12-02 15:06:28,961 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 42 [2023-12-02 15:06:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:28,962 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-12-02 15:06:28,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-12-02 15:06:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 15:06:28,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:28,964 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:28,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 15:06:29,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:29,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:29,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1918388071, now seen corresponding path program 1 times [2023-12-02 15:06:29,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:29,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83505859] [2023-12-02 15:06:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:29,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:29,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:29,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:29,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 15:06:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:29,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:06:29,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 15:06:33,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:33,904 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:33,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83505859] [2023-12-02 15:06:33,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83505859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:33,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:06:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924900615] [2023-12-02 15:06:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:06:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:06:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:33,907 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:34,009 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2023-12-02 15:06:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:06:34,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2023-12-02 15:06:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:34,012 INFO L225 Difference]: With dead ends: 45 [2023-12-02 15:06:34,012 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 15:06:34,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:06:34,013 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:34,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:06:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 15:06:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-12-02 15:06:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:06:34,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-02 15:06:34,019 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2023-12-02 15:06:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:34,020 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-02 15:06:34,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-02 15:06:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 15:06:34,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:34,021 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:34,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:06:34,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:34,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:34,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1925954985, now seen corresponding path program 1 times [2023-12-02 15:06:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:34,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854860941] [2023-12-02 15:06:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:34,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:34,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 15:06:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:34,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:06:34,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 15:06:37,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:06:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 15:06:39,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:39,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854860941] [2023-12-02 15:06:39,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854860941] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:06:39,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:06:39,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-02 15:06:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299591212] [2023-12-02 15:06:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:39,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:06:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:06:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:06:39,922 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:41,528 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2023-12-02 15:06:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:06:41,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2023-12-02 15:06:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:41,531 INFO L225 Difference]: With dead ends: 50 [2023-12-02 15:06:41,531 INFO L226 Difference]: Without dead ends: 48 [2023-12-02 15:06:41,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-02 15:06:41,532 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:41,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 89 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:06:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-02 15:06:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2023-12-02 15:06:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:06:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-02 15:06:41,540 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2023-12-02 15:06:41,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:41,540 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-02 15:06:41,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-02 15:06:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 15:06:41,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:41,541 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:41,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 15:06:41,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:41,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:41,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1926014567, now seen corresponding path program 1 times [2023-12-02 15:06:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858322838] [2023-12-02 15:06:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:41,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:41,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:41,744 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:41,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 15:06:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:41,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:06:41,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 15:06:43,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:43,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:43,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858322838] [2023-12-02 15:06:43,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858322838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:43,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:43,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:06:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345833009] [2023-12-02 15:06:43,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:43,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:06:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:06:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:06:43,481 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:43,640 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-12-02 15:06:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:06:43,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2023-12-02 15:06:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:43,642 INFO L225 Difference]: With dead ends: 47 [2023-12-02 15:06:43,642 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:06:43,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:06:43,644 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:43,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:06:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:06:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:06:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:06:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:06:43,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2023-12-02 15:06:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:43,645 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:06:43,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:06:43,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:06:43,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:06:43,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:06:43,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 15:06:43,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:43,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:06:45,580 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 41) no Hoare annotation was computed. [2023-12-02 15:06:45,580 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2023-12-02 15:06:45,580 INFO L899 garLoopResultBuilder]: For program point L56-1(lines 46 57) no Hoare annotation was computed. [2023-12-02 15:06:45,580 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-12-02 15:06:45,581 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-02 15:06:45,581 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-02 15:06:45,581 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse0))) (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse1)))) (and (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse0)) (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 15:06:45,581 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-02 15:06:45,581 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse0))) (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse1)))) (and (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse0)) (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 15:06:45,581 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2023-12-02 15:06:45,581 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2023-12-02 15:06:45,581 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-02 15:06:45,582 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-12-02 15:06:45,582 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:06:45,582 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 45) no Hoare annotation was computed. [2023-12-02 15:06:45,582 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse0))) (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse1)))) (and (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse0)) (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 15:06:45,582 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-12-02 15:06:45,582 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:06:45,582 INFO L895 garLoopResultBuilder]: At program point L67-2(lines 67 73) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse0))) (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse1)))) (and (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse0)) (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 15:06:45,582 INFO L899 garLoopResultBuilder]: For program point L67-3(lines 67 73) no Hoare annotation was computed. [2023-12-02 15:06:45,583 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 44) no Hoare annotation was computed. [2023-12-02 15:06:45,583 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse0))) (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse1)))) (and (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse0)) (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 15:06:45,583 INFO L895 garLoopResultBuilder]: At program point L51-1(line 51) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse0))) (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg .cse1)))) (and (fp.geq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse0)) (fp.leq ~var_1_5~0 ((_ to_fp 11 53) currentRoundingMode .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 15:06:45,583 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-02 15:06:45,583 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-02 15:06:45,583 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-02 15:06:45,583 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-02 15:06:45,586 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-02 15:06:45,588 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:06:45,596 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-12-02 15:06:45,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:06:45 BoogieIcfgContainer [2023-12-02 15:06:45,597 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:06:45,598 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:06:45,598 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:06:45,598 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:06:45,598 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:19" (3/4) ... [2023-12-02 15:06:45,600 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:06:45,602 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-12-02 15:06:45,606 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-12-02 15:06:45,606 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-02 15:06:45,606 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 15:06:45,606 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:06:45,679 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:06:45,680 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:06:45,680 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:06:45,681 INFO L158 Benchmark]: Toolchain (without parser) took 27226.26ms. Allocated memory was 111.1MB in the beginning and 408.9MB in the end (delta: 297.8MB). Free memory was 87.8MB in the beginning and 324.6MB in the end (delta: -236.8MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2023-12-02 15:06:45,681 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:45,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.24ms. Allocated memory is still 111.1MB. Free memory was 87.8MB in the beginning and 76.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:06:45,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.09ms. Allocated memory is still 111.1MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:45,682 INFO L158 Benchmark]: Boogie Preprocessor took 37.70ms. Allocated memory is still 111.1MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:06:45,682 INFO L158 Benchmark]: RCFGBuilder took 399.87ms. Allocated memory is still 111.1MB. Free memory was 72.8MB in the beginning and 59.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:06:45,683 INFO L158 Benchmark]: TraceAbstraction took 26360.54ms. Allocated memory was 111.1MB in the beginning and 408.9MB in the end (delta: 297.8MB). Free memory was 58.5MB in the beginning and 329.8MB in the end (delta: -271.3MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-12-02 15:06:45,683 INFO L158 Benchmark]: Witness Printer took 82.29ms. Allocated memory is still 408.9MB. Free memory was 329.8MB in the beginning and 324.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:06:45,685 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.24ms. Allocated memory is still 111.1MB. Free memory was 87.8MB in the beginning and 76.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.09ms. Allocated memory is still 111.1MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.70ms. Allocated memory is still 111.1MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.87ms. Allocated memory is still 111.1MB. Free memory was 72.8MB in the beginning and 59.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 26360.54ms. Allocated memory was 111.1MB in the beginning and 408.9MB in the end (delta: 297.8MB). Free memory was 58.5MB in the beginning and 329.8MB in the end (delta: -271.3MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Witness Printer took 82.29ms. Allocated memory is still 408.9MB. Free memory was 329.8MB in the beginning and 324.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.3s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 421 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 247 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 174 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 27 PreInvPairs, 39 NumberOfFragments, 226 HoareAnnotationTreeSize, 27 FomulaSimplifications, 1318 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1102 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 19.9s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 283 ConstructedInterpolants, 2 QuantifiedInterpolants, 1105 SizeOfPredicates, 40 NumberOfNonLiveVariables, 451 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 417/420 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-12-02 15:06:45,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b40d037f-a7e9-493b-9cc5-ff3530276b48/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE