./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 cc0f50b1e3335724e12d8f8ff753e8d68608bc02a42487f7cc093f8f08f9715b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:56:53,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:56:53,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:56:53,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:56:53,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:56:53,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:56:53,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:56:53,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:56:53,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:56:53,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:56:53,782 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:56:53,782 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:56:53,783 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:56:53,783 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:56:53,784 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:56:53,784 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:56:53,785 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:56:53,785 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:56:53,786 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:56:53,786 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:56:53,787 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:56:53,788 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:56:53,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:56:53,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:56:53,789 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:56:53,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:56:53,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:56:53,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:56:53,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:56:53,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:56:53,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:56:53,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:56:53,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:56:53,793 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:56:53,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:56:53,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:56:53,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:56:53,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:56:53,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:56:53,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:56:53,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:56:53,797 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:56:53,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:56:53,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:56:53,798 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:56:53,798 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:56:53,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:56:53,799 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_f27d9bf3-f5db-467e-a02f-90712e489fb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc0f50b1e3335724e12d8f8ff753e8d68608bc02a42487f7cc093f8f08f9715b [2023-12-02 14:56:54,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:56:54,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:56:54,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:56:54,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:56:54,025 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:56:54,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i [2023-12-02 14:56:56,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:56:56,910 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:56:56,911 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i [2023-12-02 14:56:56,918 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data/0edf60b48/2652fdc9ebac4a4389afd79dace7c269/FLAGc368d8084 [2023-12-02 14:56:56,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data/0edf60b48/2652fdc9ebac4a4389afd79dace7c269 [2023-12-02 14:56:56,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:56:56,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:56:56,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:56:56,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:56:56,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:56:56,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:56" (1/1) ... [2023-12-02 14:56:56,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c87fa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:56, skipping insertion in model container [2023-12-02 14:56:56,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:56" (1/1) ... [2023-12-02 14:56:56,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:56:57,086 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_f27d9bf3-f5db-467e-a02f-90712e489fb2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i[915,928] [2023-12-02 14:56:57,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:56:57,128 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:56:57,138 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_f27d9bf3-f5db-467e-a02f-90712e489fb2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i[915,928] [2023-12-02 14:56:57,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:56:57,170 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:56:57,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57 WrapperNode [2023-12-02 14:56:57,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:56:57,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:56:57,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:56:57,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:56:57,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,208 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-12-02 14:56:57,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:56:57,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:56:57,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:56:57,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:56:57,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:56:57,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:56:57,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:56:57,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:56:57,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (1/1) ... [2023-12-02 14:56:57,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:56:57,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:56:57,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:56:57,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:56:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:56:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:56:57,297 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:56:57,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:56:57,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:56:57,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:56:57,371 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:56:57,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:56:57,574 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:56:57,726 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:56:57,727 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 14:56:57,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:57 BoogieIcfgContainer [2023-12-02 14:56:57,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:56:57,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:56:57,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:56:57,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:56:57,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:56:56" (1/3) ... [2023-12-02 14:56:57,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61153ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:57, skipping insertion in model container [2023-12-02 14:56:57,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:57" (2/3) ... [2023-12-02 14:56:57,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61153ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:57, skipping insertion in model container [2023-12-02 14:56:57,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:57" (3/3) ... [2023-12-02 14:56:57,738 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-68.i [2023-12-02 14:56:57,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:56:57,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:56:57,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:56:57,810 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;@6f5640af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:56:57,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:56:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 14:56:57,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 14:56:57,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:56:57,826 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:56:57,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:56:57,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:56:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1984083578, now seen corresponding path program 1 times [2023-12-02 14:56:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:56:57,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534325733] [2023-12-02 14:56:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:56:57,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:56:57,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:56:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654965446] [2023-12-02 14:56:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:56:57,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:56:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:56:57,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:56:57,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:56:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:56:58,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:56:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:56:58,229 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 14:56:58,231 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:56:58,232 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 14:56:58,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:56:58,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 14:56:58,439 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 14:56:58,441 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:56:58,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:56:58 BoogieIcfgContainer [2023-12-02 14:56:58,483 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:56:58,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:56:58,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:56:58,484 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:56:58,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:57" (3/4) ... [2023-12-02 14:56:58,486 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 14:56:58,487 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:56:58,488 INFO L158 Benchmark]: Toolchain (without parser) took 1554.06ms. Allocated memory is still 184.5MB. Free memory was 152.5MB in the beginning and 130.0MB in the end (delta: 22.6MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2023-12-02 14:56:58,489 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:56:58,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.58ms. Allocated memory is still 184.5MB. Free memory was 152.5MB in the beginning and 140.6MB in the end (delta: 11.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 14:56:58,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.78ms. Allocated memory is still 184.5MB. Free memory was 140.6MB in the beginning and 138.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:56:58,491 INFO L158 Benchmark]: Boogie Preprocessor took 26.92ms. Allocated memory is still 184.5MB. Free memory was 138.5MB in the beginning and 137.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:56:58,491 INFO L158 Benchmark]: RCFGBuilder took 491.81ms. Allocated memory is still 184.5MB. Free memory was 137.4MB in the beginning and 108.5MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 14:56:58,492 INFO L158 Benchmark]: TraceAbstraction took 751.10ms. Allocated memory is still 184.5MB. Free memory was 108.0MB in the beginning and 130.0MB in the end (delta: -21.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:56:58,492 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 184.5MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:56:58,495 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.58ms. Allocated memory is still 184.5MB. Free memory was 152.5MB in the beginning and 140.6MB in the end (delta: 11.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.78ms. Allocated memory is still 184.5MB. Free memory was 140.6MB in the beginning and 138.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.92ms. Allocated memory is still 184.5MB. Free memory was 138.5MB in the beginning and 137.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 491.81ms. Allocated memory is still 184.5MB. Free memory was 137.4MB in the beginning and 108.5MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 751.10ms. Allocated memory is still 184.5MB. Free memory was 108.0MB in the beginning and 130.0MB in the end (delta: -21.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 184.5MB. Free memory is still 130.0MB. 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 someBinaryFLOATComparisonOperation at line 69, overapproximation of someBinaryDOUBLEComparisonOperation at line 39, overapproximation of shiftRight at line 48. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 32; [L23] float var_1_2 = 64.5; [L24] float var_1_3 = 16.8; [L25] signed long int var_1_8 = 10; [L26] signed long int var_1_9 = 25; [L27] double var_1_10 = 0.75; [L28] signed long int var_1_11 = 2; [L29] signed long int var_1_12 = 32; [L30] unsigned char var_1_13 = 0; [L31] unsigned char var_1_14 = 0; [L32] double var_1_15 = 50.2; [L33] signed long int last_1_var_1_9 = 25; [L34] double last_1_var_1_10 = 0.75; [L98] isInitial = 1 [L99] FCALL initially() [L100] COND TRUE 1 [L101] CALL updateLastVariables() [L90] last_1_var_1_9 = var_1_9 [L91] last_1_var_1_10 = var_1_10 [L101] RET updateLastVariables() [L102] CALL updateVariables() [L66] var_1_2 = __VERIFIER_nondet_float() [L67] CALL assume_abort_if_not((var_1_2 >= 0.0F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=84/5, var_1_8=10, var_1_9=25] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not((var_1_2 >= 0.0F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=84/5, var_1_8=10, var_1_9=25] [L68] var_1_3 = __VERIFIER_nondet_float() [L69] CALL assume_abort_if_not((var_1_3 >= 0.0F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=10, var_1_9=25] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not((var_1_3 >= 0.0F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=10, var_1_9=25] [L70] var_1_8 = __VERIFIER_nondet_long() [L71] CALL assume_abort_if_not(var_1_8 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_8 >= -2147483648) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L72] CALL assume_abort_if_not(var_1_8 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_8 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L73] CALL assume_abort_if_not(var_1_8 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_8 != 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L74] var_1_11 = __VERIFIER_nondet_long() [L75] CALL assume_abort_if_not(var_1_11 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_11 >= -1) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L76] CALL assume_abort_if_not(var_1_11 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_11 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L77] var_1_12 = __VERIFIER_nondet_long() [L78] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L79] CALL assume_abort_if_not(var_1_12 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_12 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L80] var_1_13 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L82] CALL assume_abort_if_not(var_1_13 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_13 <= 1) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L83] var_1_14 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L85] CALL assume_abort_if_not(var_1_14 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_14 <= 1) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_8=27, var_1_9=25] [L86] var_1_15 = __VERIFIER_nondet_double() [L87] CALL assume_abort_if_not((var_1_15 >= -922337.2036854765600e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=1, var_1_1=32, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not((var_1_15 >= -922337.2036854765600e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=1, var_1_1=32, var_1_8=27, var_1_9=25] [L102] RET updateVariables() [L103] CALL step() [L38] signed long int stepLocal_0 = last_1_var_1_9 + last_1_var_1_9; [L39] COND TRUE (var_1_2 - var_1_3) >= last_1_var_1_10 [L40] COND TRUE stepLocal_0 >= (last_1_var_1_9 / var_1_8) [L41] var_1_1 = last_1_var_1_9 [L46] signed long int stepLocal_2 = var_1_1; [L47] signed long int stepLocal_1 = var_1_1; [L48] EXPR var_1_8 >> last_1_var_1_9 [L48] COND FALSE !((var_1_8 >> last_1_var_1_9) > stepLocal_1) [L55] var_1_9 = last_1_var_1_9 [L57] COND TRUE ((((var_1_9) > (var_1_1)) ? (var_1_9) : (var_1_1))) == (var_1_9 * (var_1_11 - var_1_12)) [L58] COND TRUE var_1_13 || var_1_14 [L59] var_1_10 = var_1_15 [L103] RET step() [L104] CALL, EXPR property() [L94] EXPR (((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9))) [L94] EXPR var_1_8 >> last_1_var_1_9 [L94] EXPR (((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9))) [L94-L95] return ((((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9)))) && ((((((var_1_9) > (var_1_1)) ? (var_1_9) : (var_1_1))) == (var_1_9 * (var_1_11 - var_1_12))) ? ((var_1_13 || var_1_14) ? (var_1_10 == ((double) var_1_15)) : (var_1_10 == ((double) var_1_15))) : 1) ; [L104] RET, EXPR property() [L104] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=2, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=1, var_1_15=2, var_1_1=25, var_1_8=27, var_1_9=25] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=2, var_1_11=2, var_1_12=1, var_1_13=1, var_1_14=1, var_1_15=2, var_1_1=25, var_1_8=27, var_1_9=25] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 14, 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=31occurred 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, 54 NumberOfCodeBlocks, 54 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 14:56:58,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 cc0f50b1e3335724e12d8f8ff753e8d68608bc02a42487f7cc093f8f08f9715b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:57:00,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:57:00,529 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 14:57:00,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:57:00,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:57:00,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:57:00,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:57:00,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:57:00,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:57:00,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:57:00,567 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:57:00,568 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:57:00,568 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:57:00,569 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:57:00,569 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:57:00,570 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:57:00,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:57:00,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:57:00,572 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:57:00,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:57:00,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:57:00,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:57:00,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:57:00,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:57:00,575 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:57:00,575 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 14:57:00,575 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 14:57:00,576 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:57:00,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:57:00,577 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:57:00,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:57:00,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 14:57:00,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:57:00,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:57:00,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:57:00,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:57:00,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:57:00,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:57:00,579 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 14:57:00,580 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 14:57:00,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:57:00,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:57:00,580 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:57:00,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:57:00,581 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_f27d9bf3-f5db-467e-a02f-90712e489fb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc0f50b1e3335724e12d8f8ff753e8d68608bc02a42487f7cc093f8f08f9715b [2023-12-02 14:57:00,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:57:00,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:57:00,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:57:00,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:57:00,872 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:57:00,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i [2023-12-02 14:57:03,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:57:03,816 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:57:03,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i [2023-12-02 14:57:03,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data/1d81a4f7e/ec521e58d9c04993a15b84d95999bf02/FLAGf6c040d7d [2023-12-02 14:57:03,841 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/data/1d81a4f7e/ec521e58d9c04993a15b84d95999bf02 [2023-12-02 14:57:03,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:57:03,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:57:03,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:57:03,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:57:03,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:57:03,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:57:03" (1/1) ... [2023-12-02 14:57:03,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1496d64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:03, skipping insertion in model container [2023-12-02 14:57:03,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:57:03" (1/1) ... [2023-12-02 14:57:03,881 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:57:04,032 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_f27d9bf3-f5db-467e-a02f-90712e489fb2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i[915,928] [2023-12-02 14:57:04,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:57:04,083 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:57:04,096 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_f27d9bf3-f5db-467e-a02f-90712e489fb2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-68.i[915,928] [2023-12-02 14:57:04,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:57:04,133 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:57:04,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04 WrapperNode [2023-12-02 14:57:04,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:57:04,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:57:04,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:57:04,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:57:04,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,180 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 103 [2023-12-02 14:57:04,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:57:04,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:57:04,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:57:04,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:57:04,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:57:04,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:57:04,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:57:04,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:57:04,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (1/1) ... [2023-12-02 14:57:04,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:57:04,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:04,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:57:04,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:57:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:57:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:57:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:57:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:57:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:57:04,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:57:04,377 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:57:04,379 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:57:05,899 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:57:05,943 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:57:05,943 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 14:57:05,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:57:05 BoogieIcfgContainer [2023-12-02 14:57:05,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:57:05,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:57:05,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:57:05,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:57:05,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:57:03" (1/3) ... [2023-12-02 14:57:05,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0c4199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:57:05, skipping insertion in model container [2023-12-02 14:57:05,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:04" (2/3) ... [2023-12-02 14:57:05,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0c4199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:57:05, skipping insertion in model container [2023-12-02 14:57:05,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:57:05" (3/3) ... [2023-12-02 14:57:05,953 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-68.i [2023-12-02 14:57:05,971 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:57:05,971 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:57:06,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:57:06,019 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;@6ac652a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:57:06,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:57:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 14:57:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 14:57:06,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:06,033 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:06,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:06,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1779491274, now seen corresponding path program 1 times [2023-12-02 14:57:06,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:57:06,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127055106] [2023-12-02 14:57:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:06,053 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 14:57:06,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:57:06,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:06,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:06,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 14:57:06,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-02 14:57:06,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:57:06,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:57:06,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127055106] [2023-12-02 14:57:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127055106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:57:06,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:57:06,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:57:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005970033] [2023-12-02 14:57:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:57:06,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 14:57:06,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:57:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 14:57:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:57:06,379 INFO L87 Difference]: Start difference. First operand has 42 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 14:57:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:06,907 INFO L93 Difference]: Finished difference Result 81 states and 140 transitions. [2023-12-02 14:57:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 14:57:06,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2023-12-02 14:57:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:06,934 INFO L225 Difference]: With dead ends: 81 [2023-12-02 14:57:06,934 INFO L226 Difference]: Without dead ends: 40 [2023-12-02 14:57:06,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 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 14:57:06,939 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:06,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:57:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-02 14:57:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-02 14:57:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 14:57:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2023-12-02 14:57:06,973 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 59 transitions. Word has length 87 [2023-12-02 14:57:06,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:06,974 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 59 transitions. [2023-12-02 14:57:06,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 14:57:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 59 transitions. [2023-12-02 14:57:06,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 14:57:06,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:06,979 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:06,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:07,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:07,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:07,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:07,182 INFO L85 PathProgramCache]: Analyzing trace with hash -109683714, now seen corresponding path program 1 times [2023-12-02 14:57:07,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:57:07,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700321909] [2023-12-02 14:57:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:07,183 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 14:57:07,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:57:07,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:07,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:07,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 14:57:07,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 14:57:21,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:57:21,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:57:21,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700321909] [2023-12-02 14:57:21,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700321909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:57:21,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:57:21,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 14:57:21,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602265532] [2023-12-02 14:57:21,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:57:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:57:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:57:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:57:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:57:21,719 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 14:57:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:41,644 INFO L93 Difference]: Finished difference Result 104 states and 148 transitions. [2023-12-02 14:57:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:57:41,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2023-12-02 14:57:41,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:41,661 INFO L225 Difference]: With dead ends: 104 [2023-12-02 14:57:41,662 INFO L226 Difference]: Without dead ends: 102 [2023-12-02 14:57:41,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:57:41,663 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 91 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:41,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 207 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2023-12-02 14:57:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-02 14:57:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 83. [2023-12-02 14:57:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 14:57:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2023-12-02 14:57:41,689 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 87 [2023-12-02 14:57:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:41,690 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2023-12-02 14:57:41,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 14:57:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2023-12-02 14:57:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 14:57:41,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:41,693 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:41,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:41,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:41,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:41,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:41,898 INFO L85 PathProgramCache]: Analyzing trace with hash 885412043, now seen corresponding path program 1 times [2023-12-02 14:57:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:57:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896286007] [2023-12-02 14:57:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:41,899 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 14:57:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:57:41,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:41,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:57:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:42,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 14:57:42,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:58:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 14:58:11,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:58:11,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:58:11,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896286007] [2023-12-02 14:58:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896286007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:11,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:11,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 14:58:11,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518897408] [2023-12-02 14:58:11,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:11,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:58:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:58:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:58:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:58:11,322 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 14:58:13,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 14:59:00,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 14:59:01,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 14:59:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:05,585 INFO L93 Difference]: Finished difference Result 108 states and 151 transitions. [2023-12-02 14:59:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 14:59:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-12-02 14:59:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:05,602 INFO L225 Difference]: With dead ends: 108 [2023-12-02 14:59:05,602 INFO L226 Difference]: Without dead ends: 106 [2023-12-02 14:59:05,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:59:05,603 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 128 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:05,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 200 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 49.2s Time] [2023-12-02 14:59:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-02 14:59:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2023-12-02 14:59:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 14:59:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 130 transitions. [2023-12-02 14:59:05,617 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 130 transitions. Word has length 88 [2023-12-02 14:59:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:05,618 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 130 transitions. [2023-12-02 14:59:05,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 14:59:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 130 transitions. [2023-12-02 14:59:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 14:59:05,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:05,621 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:05,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:59:05,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:59:05,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:59:05,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1886774286, now seen corresponding path program 1 times [2023-12-02 14:59:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:59:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650517843] [2023-12-02 14:59:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:05,826 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 14:59:05,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:59:05,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:59:05,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 14:59:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:06,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 14:59:06,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 14:59:25,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:59:25,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:59:25,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650517843] [2023-12-02 14:59:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650517843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:25,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 14:59:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432745805] [2023-12-02 14:59:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:25,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 14:59:25,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:59:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 14:59:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:59:25,221 INFO L87 Difference]: Start difference. First operand 88 states and 130 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 14:59:28,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:00:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:06,075 INFO L93 Difference]: Finished difference Result 240 states and 344 transitions. [2023-12-02 15:00:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:00:06,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-12-02 15:00:06,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:06,096 INFO L225 Difference]: With dead ends: 240 [2023-12-02 15:00:06,096 INFO L226 Difference]: Without dead ends: 238 [2023-12-02 15:00:06,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:00:06,098 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 94 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:06,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 253 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 35.4s Time] [2023-12-02 15:00:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-02 15:00:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 183. [2023-12-02 15:00:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 120 states have (on average 1.35) internal successors, (162), 120 states have internal predecessors, (162), 56 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 15:00:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 274 transitions. [2023-12-02 15:00:06,134 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 274 transitions. Word has length 88 [2023-12-02 15:00:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:06,135 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 274 transitions. [2023-12-02 15:00:06,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 15:00:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 274 transitions. [2023-12-02 15:00:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 15:00:06,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:06,137 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:06,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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)] Forceful destruction successful, exit code 0 [2023-12-02 15:00:06,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:00:06,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:00:06,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash -633185648, now seen corresponding path program 1 times [2023-12-02 15:00:06,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:00:06,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878464166] [2023-12-02 15:00:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:06,342 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 15:00:06,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:00:06,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:00:06,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:00:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:06,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:00:06,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 165 proven. 27 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-02 15:00:07,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:10,049 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:00:10,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878464166] [2023-12-02 15:00:10,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878464166] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:00:10,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1875521613] [2023-12-02 15:00:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:10,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:00:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:00:10,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:00:10,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 15:00:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:10,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:00:10,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 15:00:19,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:00:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1875521613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:19,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:00:19,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-02 15:00:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246060497] [2023-12-02 15:00:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:00:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:00:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:00:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:00:19,324 INFO L87 Difference]: Start difference. First operand 183 states and 274 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 15:00:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:24,707 INFO L93 Difference]: Finished difference Result 398 states and 594 transitions. [2023-12-02 15:00:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:00:24,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-12-02 15:00:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:24,712 INFO L225 Difference]: With dead ends: 398 [2023-12-02 15:00:24,713 INFO L226 Difference]: Without dead ends: 216 [2023-12-02 15:00:24,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-12-02 15:00:24,715 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 13 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:24,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 156 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 15:00:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-02 15:00:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-02 15:00:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 137 states have (on average 1.313868613138686) internal successors, (180), 137 states have internal predecessors, (180), 70 states have call successors, (70), 8 states have call predecessors, (70), 8 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 15:00:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 320 transitions. [2023-12-02 15:00:24,748 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 320 transitions. Word has length 88 [2023-12-02 15:00:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:24,749 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 320 transitions. [2023-12-02 15:00:24,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 15:00:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 320 transitions. [2023-12-02 15:00:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 15:00:24,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:24,751 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:24,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 15:00:24,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:00:25,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:00:25,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:00:25,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:25,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1648899397, now seen corresponding path program 1 times [2023-12-02 15:00:25,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:00:25,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622003654] [2023-12-02 15:00:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:25,159 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 15:00:25,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:00:25,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:00:25,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 (8)] Waiting until timeout for monitored process [2023-12-02 15:00:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:25,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 15:00:25,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:01:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 15:01:08,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:01:08,054 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:01:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622003654] [2023-12-02 15:01:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622003654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:01:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:01:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 15:01:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615474059] [2023-12-02 15:01:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:01:08,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:01:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:01:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:01:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:01:08,055 INFO L87 Difference]: Start difference. First operand 216 states and 320 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 15:01:13,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:01:50,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:01:51,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:01:53,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:01:55,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:02:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:02:04,162 INFO L93 Difference]: Finished difference Result 281 states and 396 transitions. [2023-12-02 15:02:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 15:02:04,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2023-12-02 15:02:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:02:04,181 INFO L225 Difference]: With dead ends: 281 [2023-12-02 15:02:04,181 INFO L226 Difference]: Without dead ends: 279 [2023-12-02 15:02:04,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-12-02 15:02:04,182 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 111 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 71 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:02:04,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 254 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 391 Invalid, 1 Unknown, 0 Unchecked, 47.1s Time] [2023-12-02 15:02:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-02 15:02:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 220. [2023-12-02 15:02:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 140 states have (on average 1.3071428571428572) internal successors, (183), 140 states have internal predecessors, (183), 70 states have call successors, (70), 9 states have call predecessors, (70), 9 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 15:02:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 323 transitions. [2023-12-02 15:02:04,211 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 323 transitions. Word has length 89 [2023-12-02 15:02:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:02:04,212 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 323 transitions. [2023-12-02 15:02:04,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 15:02:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 323 transitions. [2023-12-02 15:02:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-02 15:02:04,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:02:04,216 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:02:04,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 (8)] Forceful destruction successful, exit code 0 [2023-12-02 15:02:04,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:02:04,421 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:02:04,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:02:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 817207770, now seen corresponding path program 1 times [2023-12-02 15:02:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:02:04,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328212678] [2023-12-02 15:02:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:04,422 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 15:02:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:02:04,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 15:02:04,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/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 (9)] Waiting until timeout for monitored process [2023-12-02 15:02:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:04,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 15:02:04,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:02:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 810 proven. 1 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-12-02 15:02:06,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:03:05,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:03:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328212678] [2023-12-02 15:03:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328212678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:03:05,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1131051610] [2023-12-02 15:03:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:03:05,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:03:05,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:03:05,331 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:03:05,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f27d9bf3-f5db-467e-a02f-90712e489fb2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 15:03:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:03:06,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:03:06,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:03:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 812 proven. 1 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2023-12-02 15:03:49,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:07:41,083 WARN L293 SmtUtils]: Spent 1.10m on a formula simplification that was a NOOP. DAG size: 143 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:10:35,590 WARN L293 SmtUtils]: Spent 1.75m on a formula simplification that was a NOOP. DAG size: 129 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)