./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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_40051d34-058e-41f6-a22e-b9bd44fa378d/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 72006f0e0119dbb436ff3eb0610d23abbaee42e3643f2bc291ef949bbdad90db --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:36:39,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:36:39,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:36:39,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:36:39,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:36:39,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:36:39,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:36:39,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:36:39,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:36:39,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:36:39,830 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:36:39,830 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:36:39,831 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:36:39,831 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:36:39,832 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:36:39,832 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:36:39,833 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:36:39,833 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:36:39,834 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:36:39,834 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:36:39,835 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:36:39,836 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:36:39,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:36:39,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:36:39,838 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:36:39,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:36:39,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:36:39,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:36:39,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:36:39,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:36:39,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:36:39,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:36:39,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:36:39,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:36:39,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:36:39,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:36:39,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:36:39,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:36:39,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:36:39,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:36:39,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:36:39,843 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:36:39,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:36:39,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:36:39,844 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:36:39,844 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:36:39,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:36:39,844 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_40051d34-058e-41f6-a22e-b9bd44fa378d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72006f0e0119dbb436ff3eb0610d23abbaee42e3643f2bc291ef949bbdad90db [2023-12-02 15:36:40,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:36:40,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:36:40,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:36:40,089 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:36:40,090 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:36:40,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i [2023-12-02 15:36:42,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:36:43,055 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:36:43,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i [2023-12-02 15:36:43,066 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data/bce18e9e9/0603f8765bd64c6e8c785f681f5a255f/FLAG7c5d430c0 [2023-12-02 15:36:43,078 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data/bce18e9e9/0603f8765bd64c6e8c785f681f5a255f [2023-12-02 15:36:43,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:36:43,082 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:36:43,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:36:43,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:36:43,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:36:43,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a6d4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43, skipping insertion in model container [2023-12-02 15:36:43,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,121 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:36:43,245 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_40051d34-058e-41f6-a22e-b9bd44fa378d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i[916,929] [2023-12-02 15:36:43,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:36:43,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:36:43,351 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_40051d34-058e-41f6-a22e-b9bd44fa378d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i[916,929] [2023-12-02 15:36:43,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:36:43,410 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:36:43,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43 WrapperNode [2023-12-02 15:36:43,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:36:43,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:36:43,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:36:43,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:36:43,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,478 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-12-02 15:36:43,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:36:43,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:36:43,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:36:43,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:36:43,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:36:43,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:36:43,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:36:43,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:36:43,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (1/1) ... [2023-12-02 15:36:43,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:36:43,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:36:43,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:36:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:36:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:36:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:36:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:36:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:36:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:36:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:36:43,688 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:36:43,689 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:36:44,085 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:36:44,388 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:36:44,388 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:36:44,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:36:44 BoogieIcfgContainer [2023-12-02 15:36:44,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:36:44,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:36:44,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:36:44,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:36:44,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:36:43" (1/3) ... [2023-12-02 15:36:44,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d124323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:36:44, skipping insertion in model container [2023-12-02 15:36:44,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:43" (2/3) ... [2023-12-02 15:36:44,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d124323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:36:44, skipping insertion in model container [2023-12-02 15:36:44,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:36:44" (3/3) ... [2023-12-02 15:36:44,398 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-93.i [2023-12-02 15:36:44,417 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:36:44,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:36:44,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:36:44,471 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;@44f89d48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:36:44,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:36:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 15:36:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:36:44,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:44,483 INFO L195 NwaCegarLoop]: trace histogram [23, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:36:44,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:36:44,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1381099392, now seen corresponding path program 1 times [2023-12-02 15:36:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:36:44,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708948083] [2023-12-02 15:36:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:44,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:36:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:36:45,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:36:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:36:45,450 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:36:45,452 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:36:45,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:36:45,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:36:45,460 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:36:45,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:36:45,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:36:45 BoogieIcfgContainer [2023-12-02 15:36:45,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:36:45,543 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:36:45,543 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:36:45,544 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:36:45,544 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:36:44" (3/4) ... [2023-12-02 15:36:45,546 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:36:45,547 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:36:45,548 INFO L158 Benchmark]: Toolchain (without parser) took 2466.54ms. Allocated memory is still 174.1MB. Free memory was 134.8MB in the beginning and 106.8MB in the end (delta: 28.0MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2023-12-02 15:36:45,549 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory was 80.8MB in the beginning and 80.8MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:36:45,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.09ms. Allocated memory is still 174.1MB. Free memory was 134.8MB in the beginning and 118.9MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:36:45,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.16ms. Allocated memory is still 174.1MB. Free memory was 118.9MB in the beginning and 112.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 15:36:45,551 INFO L158 Benchmark]: Boogie Preprocessor took 54.46ms. Allocated memory is still 174.1MB. Free memory was 112.6MB in the beginning and 109.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:36:45,551 INFO L158 Benchmark]: RCFGBuilder took 855.19ms. Allocated memory is still 174.1MB. Free memory was 109.6MB in the beginning and 113.4MB in the end (delta: -3.7MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2023-12-02 15:36:45,552 INFO L158 Benchmark]: TraceAbstraction took 1150.52ms. Allocated memory is still 174.1MB. Free memory was 112.4MB in the beginning and 106.8MB in the end (delta: 5.6MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2023-12-02 15:36:45,552 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 174.1MB. Free memory was 106.8MB in the beginning and 106.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:36:45,556 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory was 80.8MB in the beginning and 80.8MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.09ms. Allocated memory is still 174.1MB. Free memory was 134.8MB in the beginning and 118.9MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.16ms. Allocated memory is still 174.1MB. Free memory was 118.9MB in the beginning and 112.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.46ms. Allocated memory is still 174.1MB. Free memory was 112.6MB in the beginning and 109.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 855.19ms. Allocated memory is still 174.1MB. Free memory was 109.6MB in the beginning and 113.4MB in the end (delta: -3.7MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1150.52ms. Allocated memory is still 174.1MB. Free memory was 112.4MB in the beginning and 106.8MB in the end (delta: 5.6MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 174.1MB. Free memory was 106.8MB in the beginning and 106.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 187, overapproximation of bitwiseOr at line 57, overapproximation of someBinaryArithmeticDOUBLEoperation at line 130, overapproximation of someBinaryDOUBLEComparisonOperation at line 68. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = -256; [L23] unsigned char var_1_4 = 1; [L24] double var_1_7 = 31.25; [L25] double var_1_8 = 7.6; [L26] double var_1_9 = 8.9; [L27] double var_1_10 = 256.8; [L28] signed short int var_1_11 = 0; [L29] unsigned long int var_1_15 = 64; [L30] signed short int var_1_18 = 16; [L31] signed short int var_1_19 = 22006; [L32] unsigned char var_1_21 = 1; [L33] unsigned char var_1_22 = 0; [L34] float var_1_23 = 2.25; [L35] signed long int var_1_24 = -1; [L36] unsigned char var_1_26 = 32; [L37] unsigned char var_1_27 = 200; [L38] unsigned char var_1_28 = 5; [L39] unsigned char var_1_29 = 64; [L40] unsigned char var_1_30 = 64; [L41] unsigned char var_1_31 = 32; [L42] unsigned char var_1_32 = 5; [L43] signed char var_1_33 = 2; [L44] signed char var_1_34 = 32; [L45] unsigned short int var_1_35 = 16; [L46] float var_1_37 = 63.5; [L47] signed long int last_1_var_1_24 = -1; [L48] unsigned char last_1_var_1_26 = 32; [L49] signed char last_1_var_1_33 = 2; [L50] unsigned short int last_1_var_1_35 = 16; [L191] isInitial = 1 [L192] FCALL initially() [L193] COND TRUE 1 [L194] CALL updateLastVariables() [L181] last_1_var_1_24 = var_1_24 [L182] last_1_var_1_26 = var_1_26 [L183] last_1_var_1_33 = var_1_33 [L184] last_1_var_1_35 = var_1_35 [L194] RET updateLastVariables() [L195] CALL updateVariables() [L143] var_1_4 = __VERIFIER_nondet_uchar() [L144] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_7=125/4, var_1_8=38/5, var_1_9=89/10] [L20] COND FALSE !(!cond) [L144] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_7=125/4, var_1_8=38/5, var_1_9=89/10] [L145] CALL assume_abort_if_not(var_1_4 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4, var_1_8=38/5, var_1_9=89/10] [L20] COND FALSE !(!cond) [L145] RET assume_abort_if_not(var_1_4 <= 1) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4, var_1_8=38/5, var_1_9=89/10] [L146] var_1_8 = __VERIFIER_nondet_double() [L147] CALL assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 4611686.018427382800e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4, var_1_9=89/10] [L20] COND FALSE !(!cond) [L147] RET assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 4611686.018427382800e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4, var_1_9=89/10] [L148] var_1_9 = __VERIFIER_nondet_double() [L149] CALL assume_abort_if_not((var_1_9 >= 0.0F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 4611686.018427382800e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L149] RET assume_abort_if_not((var_1_9 >= 0.0F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 4611686.018427382800e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=1284/5, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L150] var_1_10 = __VERIFIER_nondet_double() [L151] CALL assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L151] RET assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=22006, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L152] var_1_19 = __VERIFIER_nondet_short() [L153] CALL assume_abort_if_not(var_1_19 >= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L153] RET assume_abort_if_not(var_1_19 >= 16383) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L154] CALL assume_abort_if_not(var_1_19 <= 32766) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L154] RET assume_abort_if_not(var_1_19 <= 32766) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=0, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L155] var_1_22 = __VERIFIER_nondet_uchar() [L156] CALL assume_abort_if_not(var_1_22 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L156] RET assume_abort_if_not(var_1_22 >= 1) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L157] CALL assume_abort_if_not(var_1_22 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L157] RET assume_abort_if_not(var_1_22 <= 1) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=200, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L158] var_1_27 = __VERIFIER_nondet_uchar() [L159] CALL assume_abort_if_not(var_1_27 >= 190) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L159] RET assume_abort_if_not(var_1_27 >= 190) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L160] CALL assume_abort_if_not(var_1_27 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L160] RET assume_abort_if_not(var_1_27 <= 254) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=5, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L161] var_1_28 = __VERIFIER_nondet_uchar() [L162] CALL assume_abort_if_not(var_1_28 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L162] RET assume_abort_if_not(var_1_28 >= 0) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L163] CALL assume_abort_if_not(var_1_28 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L163] RET assume_abort_if_not(var_1_28 <= 63) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=64, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L164] var_1_29 = __VERIFIER_nondet_uchar() [L165] CALL assume_abort_if_not(var_1_29 >= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L165] RET assume_abort_if_not(var_1_29 >= 63) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L166] CALL assume_abort_if_not(var_1_29 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L166] RET assume_abort_if_not(var_1_29 <= 127) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L167] var_1_30 = __VERIFIER_nondet_uchar() [L168] CALL assume_abort_if_not(var_1_30 >= 31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L168] RET assume_abort_if_not(var_1_30 >= 31) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L169] CALL assume_abort_if_not(var_1_30 <= 64) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L169] RET assume_abort_if_not(var_1_30 <= 64) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L170] var_1_31 = __VERIFIER_nondet_uchar() [L171] CALL assume_abort_if_not(var_1_31 >= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L171] RET assume_abort_if_not(var_1_31 >= 32) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L172] CALL assume_abort_if_not(var_1_31 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L172] RET assume_abort_if_not(var_1_31 <= 63) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=5, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L173] var_1_32 = __VERIFIER_nondet_uchar() [L174] CALL assume_abort_if_not(var_1_32 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L174] RET assume_abort_if_not(var_1_32 >= 0) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L175] CALL assume_abort_if_not(var_1_32 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L175] RET assume_abort_if_not(var_1_32 <= 63) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=2, var_1_34=32, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L176] var_1_34 = __VERIFIER_nondet_char() [L177] CALL assume_abort_if_not(var_1_34 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=2, var_1_34=0, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L177] RET assume_abort_if_not(var_1_34 >= 0) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=2, var_1_34=0, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L178] CALL assume_abort_if_not(var_1_34 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=2, var_1_34=0, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L20] COND FALSE !(!cond) [L178] RET assume_abort_if_not(var_1_34 <= 63) VAL [isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_11=0, var_1_15=64, var_1_18=16, var_1_19=16383, var_1_1=-256, var_1_21=1, var_1_22=1, var_1_23=9/4, var_1_24=-1, var_1_26=32, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=2, var_1_34=0, var_1_35=16, var_1_37=127/2, var_1_4=1, var_1_7=125/4] [L195] RET updateVariables() [L196] CALL step() [L54] signed long int stepLocal_6 = last_1_var_1_24; [L55] unsigned char stepLocal_5 = var_1_30; [L56] signed long int stepLocal_4 = last_1_var_1_24; [L57] EXPR last_1_var_1_35 | 100000000 [L57] COND TRUE stepLocal_6 < (last_1_var_1_35 | 100000000) [L58] COND TRUE stepLocal_5 > last_1_var_1_35 [L59] COND FALSE !(var_1_19 < stepLocal_4) [L62] var_1_35 = (((((var_1_34 + ((((var_1_28) > (32)) ? (var_1_28) : (32))))) > (((((last_1_var_1_33) < 0 ) ? -(last_1_var_1_33) : (last_1_var_1_33))))) ? ((var_1_34 + ((((var_1_28) > (32)) ? (var_1_28) : (32))))) : (((((last_1_var_1_33) < 0 ) ? -(last_1_var_1_33) : (last_1_var_1_33)))))) [L74] COND TRUE \read(var_1_4) [L75] var_1_21 = (! var_1_22) [L77] COND TRUE ! var_1_21 [L78] var_1_23 = var_1_8 [L80] COND TRUE (var_1_8 + 199.375) <= 10.5 [L81] var_1_26 = ((var_1_27 - var_1_28) - (var_1_29 - 1)) [L89] COND TRUE \read(var_1_22) [L90] var_1_33 = ((var_1_28 - var_1_32) + (var_1_31 - var_1_34)) [L92] var_1_37 = var_1_10 [L93] COND FALSE !((- var_1_8) != var_1_23) [L96] var_1_11 = ((((var_1_26) < ((var_1_26 + var_1_26))) ? (var_1_26) : ((var_1_26 + var_1_26)))) [L98] COND TRUE var_1_26 == var_1_11 [L99] var_1_15 = ((((var_1_26) > (var_1_35)) ? (var_1_26) : (var_1_35))) [L107] COND FALSE !((var_1_11 == var_1_15) && var_1_21) [L110] signed short int stepLocal_3 = var_1_11; [L111] COND TRUE var_1_1 != stepLocal_3 [L112] var_1_18 = (8 - ((((10) > ((var_1_19 - var_1_26))) ? (10) : ((var_1_19 - var_1_26))))) [L114] COND FALSE !(var_1_18 != var_1_18) [L123] var_1_24 = var_1_26 [L125] signed short int stepLocal_2 = var_1_11; [L126] signed long int stepLocal_1 = var_1_1; [L127] unsigned short int stepLocal_0 = var_1_35; [L128] COND FALSE !(stepLocal_0 == var_1_1) [L139] var_1_7 = var_1_10 [L196] RET step() [L197] CALL, EXPR property() [L187] EXPR ((((((((((((var_1_11 == var_1_15) && var_1_21) ? (var_1_1 == ((signed long int) ((((var_1_33) < (var_1_33)) ? (var_1_33) : (var_1_33))))) : 1) && ((var_1_35 == var_1_1) ? ((var_1_11 < var_1_1) ? (var_1_7 == ((double) ((var_1_8 - var_1_9) + var_1_10))) : ((var_1_1 >= 25) ? (var_1_7 == ((double) (((((var_1_8 - var_1_9)) > (var_1_10)) ? ((var_1_8 - var_1_9)) : (var_1_10))))) : (var_1_7 == ((double) var_1_10)))) : (var_1_7 == ((double) var_1_10)))) && (((- var_1_8) != var_1_23) ? (var_1_11 == ((signed short int) (500 + var_1_26))) : (var_1_11 == ((signed short int) ((((var_1_26) < ((var_1_26 + var_1_26))) ? (var_1_26) : ((var_1_26 + var_1_26)))))))) && ((var_1_26 == var_1_11) ? (var_1_15 == ((unsigned long int) ((((var_1_26) > (var_1_35)) ? (var_1_26) : (var_1_35))))) : ((var_1_9 < var_1_37) ? (var_1_15 == ((unsigned long int) var_1_35)) : (var_1_15 == ((unsigned long int) var_1_35))))) && ((var_1_1 != var_1_11) ? (var_1_18 == ((signed short int) (8 - ((((10) > ((var_1_19 - var_1_26))) ? (10) : ((var_1_19 - var_1_26))))))) : 1)) && (var_1_4 ? (var_1_21 == ((unsigned char) (! var_1_22))) : 1)) && ((! var_1_21) ? (var_1_23 == ((float) var_1_8)) : 1)) && ((var_1_18 != var_1_18) ? (((1u ^ var_1_19) > (- var_1_35)) ? (var_1_24 == ((signed long int) var_1_26)) : (var_1_22 ? (var_1_24 == ((signed long int) last_1_var_1_24)) : 1)) : (var_1_24 == ((signed long int) var_1_26)))) && (((var_1_8 + 199.375) <= 10.5) ? (var_1_26 == ((unsigned char) ((var_1_27 - var_1_28) - (var_1_29 - 1)))) : (var_1_21 ? (var_1_26 == ((unsigned char) ((var_1_29 - var_1_28) + ((var_1_30 + var_1_31) - var_1_32)))) : (var_1_26 == ((unsigned char) var_1_28))))) && (var_1_22 ? (var_1_33 == ((signed char) ((var_1_28 - var_1_32) + (var_1_31 - var_1_34)))) : 1)) && ((last_1_var_1_24 < (last_1_var_1_35 | 100000000)) ? ((var_1_30 > last_1_var_1_35) ? ((var_1_19 < last_1_var_1_24) ? (var_1_35 == ((unsigned short int) ((var_1_29 + var_1_28) + var_1_31))) : (var_1_35 == ((unsigned short int) (((((var_1_34 + ((((var_1_28) > (32)) ? (var_1_28) : (32))))) > (((((last_1_var_1_33) < 0 ) ? -(last_1_var_1_33) : (last_1_var_1_33))))) ? ((var_1_34 + ((((var_1_28) > (32)) ? (var_1_28) : (32))))) : (((((last_1_var_1_33) < 0 ) ? -(last_1_var_1_33) : (last_1_var_1_33))))))))) : (var_1_35 == ((unsigned short int) ((((var_1_32) > (((((var_1_31) > (var_1_28)) ? (var_1_31) : (var_1_28))))) ? (var_1_32) : (((((var_1_31) > (var_1_28)) ? (var_1_31) : (var_1_28))))))))) : ((var_1_8 != var_1_10) ? (var_1_35 == ((unsigned short int) ((((last_1_var_1_33) > (last_1_var_1_26)) ? (last_1_var_1_33) : (last_1_var_1_26))))) : (var_1_35 == ((unsigned short int) var_1_28)))) [L187-L188] return (((((((((((((var_1_11 == var_1_15) && var_1_21) ? (var_1_1 == ((signed long int) ((((var_1_33) < (var_1_33)) ? (var_1_33) : (var_1_33))))) : 1) && ((var_1_35 == var_1_1) ? ((var_1_11 < var_1_1) ? (var_1_7 == ((double) ((var_1_8 - var_1_9) + var_1_10))) : ((var_1_1 >= 25) ? (var_1_7 == ((double) (((((var_1_8 - var_1_9)) > (var_1_10)) ? ((var_1_8 - var_1_9)) : (var_1_10))))) : (var_1_7 == ((double) var_1_10)))) : (var_1_7 == ((double) var_1_10)))) && (((- var_1_8) != var_1_23) ? (var_1_11 == ((signed short int) (500 + var_1_26))) : (var_1_11 == ((signed short int) ((((var_1_26) < ((var_1_26 + var_1_26))) ? (var_1_26) : ((var_1_26 + var_1_26)))))))) && ((var_1_26 == var_1_11) ? (var_1_15 == ((unsigned long int) ((((var_1_26) > (var_1_35)) ? (var_1_26) : (var_1_35))))) : ((var_1_9 < var_1_37) ? (var_1_15 == ((unsigned long int) var_1_35)) : (var_1_15 == ((unsigned long int) var_1_35))))) && ((var_1_1 != var_1_11) ? (var_1_18 == ((signed short int) (8 - ((((10) > ((var_1_19 - var_1_26))) ? (10) : ((var_1_19 - var_1_26))))))) : 1)) && (var_1_4 ? (var_1_21 == ((unsigned char) (! var_1_22))) : 1)) && ((! var_1_21) ? (var_1_23 == ((float) var_1_8)) : 1)) && ((var_1_18 != var_1_18) ? (((1u ^ var_1_19) > (- var_1_35)) ? (var_1_24 == ((signed long int) var_1_26)) : (var_1_22 ? (var_1_24 == ((signed long int) last_1_var_1_24)) : 1)) : (var_1_24 == ((signed long int) var_1_26)))) && (((var_1_8 + 199.375) <= 10.5) ? (var_1_26 == ((unsigned char) ((var_1_27 - var_1_28) - (var_1_29 - 1)))) : (var_1_21 ? (var_1_26 == ((unsigned char) ((var_1_29 - var_1_28) + ((var_1_30 + var_1_31) - var_1_32)))) : (var_1_26 == ((unsigned char) var_1_28))))) && (var_1_22 ? (var_1_33 == ((signed char) ((var_1_28 - var_1_32) + (var_1_31 - var_1_34)))) : 1)) && ((last_1_var_1_24 < (last_1_var_1_35 | 100000000)) ? ((var_1_30 > last_1_var_1_35) ? ((var_1_19 < last_1_var_1_24) ? (var_1_35 == ((unsigned short int) ((var_1_29 + var_1_28) + var_1_31))) : (var_1_35 == ((unsigned short int) (((((var_1_34 + ((((var_1_28) > (32)) ? (var_1_28) : (32))))) > (((((last_1_var_1_33) < 0 ) ? -(last_1_var_1_33) : (last_1_var_1_33))))) ? ((var_1_34 + ((((var_1_28) > (32)) ? (var_1_28) : (32))))) : (((((last_1_var_1_33) < 0 ) ? -(last_1_var_1_33) : (last_1_var_1_33))))))))) : (var_1_35 == ((unsigned short int) ((((var_1_32) > (((((var_1_31) > (var_1_28)) ? (var_1_31) : (var_1_28))))) ? (var_1_32) : (((((var_1_31) > (var_1_28)) ? (var_1_31) : (var_1_28))))))))) : ((var_1_8 != var_1_10) ? (var_1_35 == ((unsigned short int) ((((last_1_var_1_33) > (last_1_var_1_26)) ? (last_1_var_1_33) : (last_1_var_1_26))))) : (var_1_35 == ((unsigned short int) var_1_28))))) && (var_1_37 == ((float) var_1_10)) ; [L197] RET, EXPR property() [L197] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=100000006, var_1_11=163, var_1_15=163, var_1_18=-16212, var_1_19=16383, var_1_1=-256, var_1_21=0, var_1_22=1, var_1_23=9/4, var_1_24=163, var_1_26=163, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=28, var_1_34=0, var_1_35=32, var_1_37=100000006, var_1_4=1, var_1_7=100000006, var_1_8=9/4] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_24=-1, last_1_var_1_26=32, last_1_var_1_33=2, last_1_var_1_35=16, var_1_10=100000006, var_1_11=163, var_1_15=163, var_1_18=-16212, var_1_19=16383, var_1_1=-256, var_1_21=0, var_1_22=1, var_1_23=9/4, var_1_24=163, var_1_26=163, var_1_27=254, var_1_28=29, var_1_29=63, var_1_30=64, var_1_31=32, var_1_32=33, var_1_33=28, var_1_34=0, var_1_35=32, var_1_37=100000006, var_1_4=1, var_1_7=100000006, var_1_8=9/4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 23, 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=45occurred 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, 0.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 15:36:45,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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_40051d34-058e-41f6-a22e-b9bd44fa378d/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 72006f0e0119dbb436ff3eb0610d23abbaee42e3643f2bc291ef949bbdad90db --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:36:47,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:36:47,534 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:36:47,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:36:47,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:36:47,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:36:47,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:36:47,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:36:47,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:36:47,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:36:47,573 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:36:47,573 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:36:47,574 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:36:47,574 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:36:47,575 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:36:47,575 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:36:47,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:36:47,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:36:47,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:36:47,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:36:47,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:36:47,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:36:47,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:36:47,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:36:47,582 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:36:47,583 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:36:47,583 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:36:47,583 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:36:47,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:36:47,584 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:36:47,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:36:47,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:36:47,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:36:47,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:36:47,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:36:47,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:36:47,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:36:47,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:36:47,586 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:36:47,587 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:36:47,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:36:47,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:36:47,587 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:36:47,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:36:47,588 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_40051d34-058e-41f6-a22e-b9bd44fa378d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72006f0e0119dbb436ff3eb0610d23abbaee42e3643f2bc291ef949bbdad90db [2023-12-02 15:36:47,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:36:47,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:36:47,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:36:47,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:36:47,880 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:36:47,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i [2023-12-02 15:36:50,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:36:50,848 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:36:50,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i [2023-12-02 15:36:50,859 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data/f63489768/49696b5cfd7943ebbf3201ebb3dab4f4/FLAGf88520ea2 [2023-12-02 15:36:50,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/data/f63489768/49696b5cfd7943ebbf3201ebb3dab4f4 [2023-12-02 15:36:50,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:36:50,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:36:50,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:36:50,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:36:50,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:36:50,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:36:50" (1/1) ... [2023-12-02 15:36:50,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b944ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:50, skipping insertion in model container [2023-12-02 15:36:50,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:36:50" (1/1) ... [2023-12-02 15:36:50,914 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:36:51,040 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_40051d34-058e-41f6-a22e-b9bd44fa378d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i[916,929] [2023-12-02 15:36:51,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:36:51,134 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:36:51,144 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_40051d34-058e-41f6-a22e-b9bd44fa378d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-93.i[916,929] [2023-12-02 15:36:51,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:36:51,208 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:36:51,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51 WrapperNode [2023-12-02 15:36:51,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:36:51,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:36:51,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:36:51,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:36:51,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,264 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 182 [2023-12-02 15:36:51,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:36:51,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:36:51,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:36:51,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:36:51,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:36:51,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:36:51,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:36:51,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:36:51,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (1/1) ... [2023-12-02 15:36:51,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:36:51,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:36:51,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:36:51,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:36:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:36:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:36:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:36:51,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:36:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:36:51,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:36:51,472 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:36:51,475 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:36:54,947 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:36:55,005 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:36:55,005 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:36:55,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:36:55 BoogieIcfgContainer [2023-12-02 15:36:55,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:36:55,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:36:55,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:36:55,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:36:55,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:36:50" (1/3) ... [2023-12-02 15:36:55,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47269e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:36:55, skipping insertion in model container [2023-12-02 15:36:55,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:36:51" (2/3) ... [2023-12-02 15:36:55,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47269e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:36:55, skipping insertion in model container [2023-12-02 15:36:55,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:36:55" (3/3) ... [2023-12-02 15:36:55,013 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-93.i [2023-12-02 15:36:55,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:36:55,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:36:55,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:36:55,077 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;@10e0a52c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:36:55,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:36:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 47 states have internal predecessors, (71), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 15:36:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 15:36:55,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:55,095 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:36:55,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:36:55,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1315534475, now seen corresponding path program 1 times [2023-12-02 15:36:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:36:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253529105] [2023-12-02 15:36:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:55,113 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 15:36:55,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:36:55,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:36:55,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 15:36:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:36:55,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:36:55,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2023-12-02 15:36:55,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:36:55,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:36:55,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253529105] [2023-12-02 15:36:55,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253529105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:36:55,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:36:55,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:36:55,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806234087] [2023-12-02 15:36:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:36:55,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:36:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:36:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:36:55,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:36:55,701 INFO L87 Difference]: Start difference. First operand has 72 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 47 states have internal predecessors, (71), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:36:57,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:36:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:36:57,920 INFO L93 Difference]: Finished difference Result 139 states and 251 transitions. [2023-12-02 15:36:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:36:57,952 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2023-12-02 15:36:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:36:57,958 INFO L225 Difference]: With dead ends: 139 [2023-12-02 15:36:57,958 INFO L226 Difference]: Without dead ends: 68 [2023-12-02 15:36:57,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:36:57,964 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:36:57,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 15:36:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-02 15:36:57,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-02 15:36:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 15:36:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 107 transitions. [2023-12-02 15:36:58,001 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 107 transitions. Word has length 148 [2023-12-02 15:36:58,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:36:58,002 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 107 transitions. [2023-12-02 15:36:58,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:36:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 107 transitions. [2023-12-02 15:36:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 15:36:58,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:58,007 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:36:58,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:36:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:36:58,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:36:58,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1549849861, now seen corresponding path program 1 times [2023-12-02 15:36:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:36:58,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628618215] [2023-12-02 15:36:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:58,211 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 15:36:58,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:36:58,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:36:58,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 15:36:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:36:58,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:36:58,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 15:36:59,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:36:59,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:36:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628618215] [2023-12-02 15:36:59,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628618215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:36:59,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:36:59,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:36:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027337817] [2023-12-02 15:36:59,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:36:59,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:36:59,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:36:59,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:36:59,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:36:59,324 INFO L87 Difference]: Start difference. First operand 68 states and 107 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:37:01,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:03,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:06,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:08,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:08,436 INFO L93 Difference]: Finished difference Result 202 states and 318 transitions. [2023-12-02 15:37:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:37:08,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 148 [2023-12-02 15:37:08,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:08,471 INFO L225 Difference]: With dead ends: 202 [2023-12-02 15:37:08,471 INFO L226 Difference]: Without dead ends: 135 [2023-12-02 15:37:08,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:37:08,474 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 120 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 47 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:08,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 409 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 14 Invalid, 4 Unknown, 0 Unchecked, 9.0s Time] [2023-12-02 15:37:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-02 15:37:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2023-12-02 15:37:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 61 states have internal predecessors, (79), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 15:37:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 171 transitions. [2023-12-02 15:37:08,503 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 171 transitions. Word has length 148 [2023-12-02 15:37:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:08,504 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 171 transitions. [2023-12-02 15:37:08,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:37:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 171 transitions. [2023-12-02 15:37:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 15:37:08,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:08,507 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:37:08,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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)] Forceful destruction successful, exit code 0 [2023-12-02 15:37:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:37:08,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:08,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -5662397, now seen corresponding path program 1 times [2023-12-02 15:37:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:37:08,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540498323] [2023-12-02 15:37:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:08,710 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 15:37:08,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:37:08,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:37:08,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 15:37:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:09,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:37:09,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 15:37:09,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:09,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:37:09,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540498323] [2023-12-02 15:37:09,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540498323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:09,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:37:09,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:37:09,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423430491] [2023-12-02 15:37:09,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:09,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:37:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:37:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:37:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:37:09,667 INFO L87 Difference]: Start difference. First operand 110 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:37:11,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:14,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:16,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:16,056 INFO L93 Difference]: Finished difference Result 244 states and 383 transitions. [2023-12-02 15:37:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:37:16,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 148 [2023-12-02 15:37:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:16,060 INFO L225 Difference]: With dead ends: 244 [2023-12-02 15:37:16,060 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 15:37:16,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:37:16,063 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 37 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:16,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 197 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 6.4s Time] [2023-12-02 15:37:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 15:37:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-12-02 15:37:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.3333333333333333) internal successors, (136), 102 states have internal predecessors, (136), 69 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 15:37:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 274 transitions. [2023-12-02 15:37:16,100 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 274 transitions. Word has length 148 [2023-12-02 15:37:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:16,101 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 274 transitions. [2023-12-02 15:37:16,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:37:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 274 transitions. [2023-12-02 15:37:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 15:37:16,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:16,105 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:37:16,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 15:37:16,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:37:16,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:16,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1285526075, now seen corresponding path program 1 times [2023-12-02 15:37:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:37:16,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108053390] [2023-12-02 15:37:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:16,312 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 15:37:16,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:37:16,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:37:16,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 15:37:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:16,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:37:16,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 15:37:16,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:16,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:37:16,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108053390] [2023-12-02 15:37:16,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108053390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:16,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:37:16,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:37:16,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816459010] [2023-12-02 15:37:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:16,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:37:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:37:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:37:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:37:16,710 INFO L87 Difference]: Start difference. First operand 175 states and 274 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:37:19,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:21,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:23,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:23,369 INFO L93 Difference]: Finished difference Result 433 states and 682 transitions. [2023-12-02 15:37:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:37:23,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 148 [2023-12-02 15:37:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:23,374 INFO L225 Difference]: With dead ends: 433 [2023-12-02 15:37:23,374 INFO L226 Difference]: Without dead ends: 301 [2023-12-02 15:37:23,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:37:23,377 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 97 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:23,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 283 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2023-12-02 15:37:23,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-02 15:37:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 177. [2023-12-02 15:37:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 104 states have internal predecessors, (138), 69 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 15:37:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 276 transitions. [2023-12-02 15:37:23,421 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 276 transitions. Word has length 148 [2023-12-02 15:37:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:23,422 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 276 transitions. [2023-12-02 15:37:23,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:37:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 276 transitions. [2023-12-02 15:37:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 15:37:23,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:23,425 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:37:23,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:37:23,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:37:23,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:23,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash -584461497, now seen corresponding path program 1 times [2023-12-02 15:37:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:37:23,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812568468] [2023-12-02 15:37:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:23,627 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 15:37:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:37:23,628 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:37:23,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:37:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:23,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:37:23,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 186 proven. 60 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-12-02 15:37:28,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:37:35,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:37:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812568468] [2023-12-02 15:37:35,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812568468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:37:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1085752289] [2023-12-02 15:37:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:35,251 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:37:35,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:37:35,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:37:35,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 15:37:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:36,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:37:36,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 15:37:39,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1085752289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:39,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:37:39,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-02 15:37:39,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492186290] [2023-12-02 15:37:39,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:39,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:37:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:37:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:37:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:37:39,800 INFO L87 Difference]: Start difference. First operand 177 states and 276 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:37:52,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:54,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:56,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:57,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:37:59,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:01,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:03,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:05,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:07,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:38:08,838 INFO L93 Difference]: Finished difference Result 429 states and 663 transitions. [2023-12-02 15:38:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:38:08,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 148 [2023-12-02 15:38:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:38:08,848 INFO L225 Difference]: With dead ends: 429 [2023-12-02 15:38:08,848 INFO L226 Difference]: Without dead ends: 295 [2023-12-02 15:38:08,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:38:08,850 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 91 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:38:08,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 258 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 6 Unknown, 0 Unchecked, 29.0s Time] [2023-12-02 15:38:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-02 15:38:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 289. [2023-12-02 15:38:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 186 states have (on average 1.3655913978494623) internal successors, (254), 188 states have internal predecessors, (254), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-02 15:38:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 446 transitions. [2023-12-02 15:38:08,882 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 446 transitions. Word has length 148 [2023-12-02 15:38:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:08,883 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 446 transitions. [2023-12-02 15:38:08,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:38:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 446 transitions. [2023-12-02 15:38:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 15:38:08,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:08,885 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:38:08,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:38:09,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 15:38:09,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:38:09,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:09,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1716470535, now seen corresponding path program 1 times [2023-12-02 15:38:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:38:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115649550] [2023-12-02 15:38:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:09,287 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 15:38:09,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:38:09,288 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:38:09,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:38:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:09,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:38:09,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 456 proven. 45 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2023-12-02 15:38:10,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 21 proven. 45 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 15:38:10,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:38:10,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115649550] [2023-12-02 15:38:10,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115649550] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:38:10,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [532262824] [2023-12-02 15:38:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:10,412 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:38:10,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:38:10,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:38:10,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 15:38:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:10,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:38:10,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 15:38:10,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:38:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [532262824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:38:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:38:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2023-12-02 15:38:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766380659] [2023-12-02 15:38:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:38:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:38:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:38:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:38:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:38:10,842 INFO L87 Difference]: Start difference. First operand 289 states and 446 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:38:12,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:15,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:17,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:38:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:38:17,207 INFO L93 Difference]: Finished difference Result 578 states and 900 transitions. [2023-12-02 15:38:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:38:17,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 148 [2023-12-02 15:38:17,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:38:17,213 INFO L225 Difference]: With dead ends: 578 [2023-12-02 15:38:17,213 INFO L226 Difference]: Without dead ends: 421 [2023-12-02 15:38:17,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 434 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:38:17,214 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 96 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:38:17,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 277 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 15:38:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-02 15:38:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 418. [2023-12-02 15:38:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 267 states have (on average 1.3632958801498127) internal successors, (364), 269 states have internal predecessors, (364), 142 states have call successors, (142), 8 states have call predecessors, (142), 8 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-02 15:38:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 648 transitions. [2023-12-02 15:38:17,262 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 648 transitions. Word has length 148 [2023-12-02 15:38:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:17,263 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 648 transitions. [2023-12-02 15:38:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:38:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 648 transitions. [2023-12-02 15:38:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 15:38:17,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:17,265 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:38:17,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-02 15:38:17,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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)] Ended with exit code 0 [2023-12-02 15:38:17,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:38:17,666 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:17,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1898438391, now seen corresponding path program 1 times [2023-12-02 15:38:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:38:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725357673] [2023-12-02 15:38:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:17,667 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 15:38:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:38:17,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:38:17,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (10)] Waiting until timeout for monitored process [2023-12-02 15:38:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:18,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:38:18,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 186 proven. 60 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-12-02 15:38:25,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 15:38:50,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:38:50,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725357673] [2023-12-02 15:38:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725357673] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:38:50,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1433708390] [2023-12-02 15:38:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:50,844 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:38:50,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:38:50,845 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:38:50,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 15:38:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:51,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:38:51,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 472 proven. 21 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-12-02 15:38:54,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:55,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1433708390] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:38:55,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817276987] [2023-12-02 15:38:55,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:55,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:38:55,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:38:55,578 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:38:55,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:38:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:55,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 15:38:55,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 481 proven. 36 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-02 15:38:57,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817276987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:38:59,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2023-12-02 15:38:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 10] total 21 [2023-12-02 15:38:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509777881] [2023-12-02 15:38:59,586 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2023-12-02 15:38:59,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 15:38:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:38:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 15:38:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2023-12-02 15:38:59,589 INFO L87 Difference]: Start difference. First operand 418 states and 648 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 7 states have call successors, (75), 6 states have call predecessors, (75), 10 states have return successors, (76), 7 states have call predecessors, (76), 7 states have call successors, (76) [2023-12-02 15:39:34,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:36,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:38,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:40,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:42,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:46,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:48,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:50,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:57,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:39:59,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:01,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:03,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:06,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:29,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:31,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:33,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:35,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:36,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:38,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:40,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:42,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:44,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:46,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:48,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:50,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:52,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:52,899 INFO L93 Difference]: Finished difference Result 1064 states and 1582 transitions. [2023-12-02 15:40:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-02 15:40:52,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 7 states have call successors, (75), 6 states have call predecessors, (75), 10 states have return successors, (76), 7 states have call predecessors, (76), 7 states have call successors, (76) Word has length 148 [2023-12-02 15:40:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:52,922 INFO L225 Difference]: With dead ends: 1064 [2023-12-02 15:40:52,922 INFO L226 Difference]: Without dead ends: 689 [2023-12-02 15:40:52,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 682 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=848, Invalid=2934, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 15:40:52,926 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 497 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 107 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:52,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 754 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 763 Invalid, 18 Unknown, 0 Unchecked, 81.9s Time] [2023-12-02 15:40:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-02 15:40:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 332. [2023-12-02 15:40:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 219 states have (on average 1.3059360730593608) internal successors, (286), 222 states have internal predecessors, (286), 98 states have call successors, (98), 14 states have call predecessors, (98), 14 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 15:40:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 482 transitions. [2023-12-02 15:40:52,981 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 482 transitions. Word has length 148 [2023-12-02 15:40:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:52,981 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 482 transitions. [2023-12-02 15:40:52,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 7 states have call successors, (75), 6 states have call predecessors, (75), 10 states have return successors, (76), 7 states have call predecessors, (76), 7 states have call successors, (76) [2023-12-02 15:40:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 482 transitions. [2023-12-02 15:40:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-02 15:40:52,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:52,983 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:40:52,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 15:40:53,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:40:53,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (10)] Ended with exit code 0 [2023-12-02 15:40:53,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:40:53,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:40:53,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1468142515, now seen corresponding path program 1 times [2023-12-02 15:40:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:40:53,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786414737] [2023-12-02 15:40:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:53,586 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 15:40:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:40:53,586 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:40:53,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (13)] Waiting until timeout for monitored process [2023-12-02 15:40:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:53,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:40:53,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-02 15:40:54,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:40:55,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:40:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786414737] [2023-12-02 15:40:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786414737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:40:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1856425602] [2023-12-02 15:40:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:55,308 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:40:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:40:55,309 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:40:55,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 15:40:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:56,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:40:56,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-02 15:40:57,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:40:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1856425602] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:40:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495853012] [2023-12-02 15:40:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:57,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:57,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:40:57,395 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:40:57,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:40:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:57,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:40:57,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-02 15:40:58,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:40:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495853012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:40:58,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:40:58,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2023-12-02 15:40:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127035112] [2023-12-02 15:40:58,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:40:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:40:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:40:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:40:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:40:58,900 INFO L87 Difference]: Start difference. First operand 332 states and 482 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:41:01,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:03,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:05,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:07,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:09,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:11,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:13,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:15,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:17,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:19,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:19,846 INFO L93 Difference]: Finished difference Result 720 states and 1054 transitions. [2023-12-02 15:41:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:41:19,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2023-12-02 15:41:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:19,885 INFO L225 Difference]: With dead ends: 720 [2023-12-02 15:41:19,885 INFO L226 Difference]: Without dead ends: 448 [2023-12-02 15:41:19,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:41:19,887 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 123 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 61 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:19,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 522 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 201 Invalid, 9 Unknown, 0 Unchecked, 20.6s Time] [2023-12-02 15:41:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-02 15:41:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 337. [2023-12-02 15:41:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 223 states have (on average 1.3004484304932735) internal successors, (290), 226 states have internal predecessors, (290), 98 states have call successors, (98), 15 states have call predecessors, (98), 15 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 15:41:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 486 transitions. [2023-12-02 15:41:19,917 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 486 transitions. Word has length 150 [2023-12-02 15:41:19,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:19,918 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 486 transitions. [2023-12-02 15:41:19,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:41:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 486 transitions. [2023-12-02 15:41:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-02 15:41:19,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:19,919 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:41:19,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (13)] Forceful destruction successful, exit code 0 [2023-12-02 15:41:20,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 15:41:20,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 15:41:20,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:41:20,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:20,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash 832680075, now seen corresponding path program 1 times [2023-12-02 15:41:20,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004042473] [2023-12-02 15:41:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:20,521 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 15:41:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:20,522 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:41:20,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (16)] Waiting until timeout for monitored process [2023-12-02 15:41:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:20,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:41:20,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 186 proven. 60 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-12-02 15:41:26,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:33,126 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004042473] [2023-12-02 15:41:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004042473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:41:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000069589] [2023-12-02 15:41:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:33,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:33,127 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:33,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 15:41:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:33,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:41:33,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 186 proven. 60 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-12-02 15:41:38,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:44,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000069589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:41:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243916842] [2023-12-02 15:41:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:44,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:41:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:41:44,937 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:41:44,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:41:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:45,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:41:45,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 186 proven. 60 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-12-02 15:41:50,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:36,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243916842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:36,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:42:36,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-12-02 15:42:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536357678] [2023-12-02 15:42:36,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:42:36,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:42:36,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:42:36,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:42:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:42:36,239 INFO L87 Difference]: Start difference. First operand 337 states and 486 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:42:40,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:42,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:43,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:45,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:47,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:49,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:49,243 INFO L93 Difference]: Finished difference Result 755 states and 1094 transitions. [2023-12-02 15:42:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:42:49,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2023-12-02 15:42:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:49,252 INFO L225 Difference]: With dead ends: 755 [2023-12-02 15:42:49,252 INFO L226 Difference]: Without dead ends: 483 [2023-12-02 15:42:49,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:42:49,254 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 39 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:49,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 338 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2023-12-02 15:42:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-02 15:42:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 464. [2023-12-02 15:42:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 300 states have (on average 1.2833333333333334) internal successors, (385), 302 states have internal predecessors, (385), 142 states have call successors, (142), 21 states have call predecessors, (142), 21 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-02 15:42:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 669 transitions. [2023-12-02 15:42:49,289 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 669 transitions. Word has length 150 [2023-12-02 15:42:49,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:49,289 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 669 transitions. [2023-12-02 15:42:49,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:42:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 669 transitions. [2023-12-02 15:42:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 15:42:49,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:49,291 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:42:49,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 15:42:49,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:42:49,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (16)] Ended with exit code 0 [2023-12-02 15:42:49,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:42:49,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:49,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash -385398964, now seen corresponding path program 1 times [2023-12-02 15:42:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:42:49,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216139113] [2023-12-02 15:42:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:49,893 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 15:42:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:42:49,894 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:42:49,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (19)] Waiting until timeout for monitored process [2023-12-02 15:42:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:50,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:42:50,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 148 proven. 3 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-02 15:42:52,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 15:42:54,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:42:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216139113] [2023-12-02 15:42:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216139113] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:54,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:42:54,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-02 15:42:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612262537] [2023-12-02 15:42:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:54,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:42:54,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:42:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:42:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:42:54,045 INFO L87 Difference]: Start difference. First operand 464 states and 669 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:42:56,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-02 15:42:59,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:01,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-02 15:43:03,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:05,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:07,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-02 15:43:09,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-02 15:43:11,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-02 15:43:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:12,333 INFO L93 Difference]: Finished difference Result 1426 states and 2086 transitions. [2023-12-02 15:43:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:43:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 151 [2023-12-02 15:43:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:12,340 INFO L225 Difference]: With dead ends: 1426 [2023-12-02 15:43:12,340 INFO L226 Difference]: Without dead ends: 1027 [2023-12-02 15:43:12,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-12-02 15:43:12,342 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 241 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 148 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:12,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 487 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 103 Invalid, 8 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 15:43:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-12-02 15:43:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 624. [2023-12-02 15:43:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 408 states have (on average 1.2818627450980393) internal successors, (523), 412 states have internal predecessors, (523), 188 states have call successors, (188), 27 states have call predecessors, (188), 27 states have return successors, (188), 184 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-02 15:43:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 899 transitions. [2023-12-02 15:43:12,433 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 899 transitions. Word has length 151 [2023-12-02 15:43:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:12,433 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 899 transitions. [2023-12-02 15:43:12,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 15:43:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 899 transitions. [2023-12-02 15:43:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 15:43:12,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:12,435 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 15:43:12,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (19)] Ended with exit code 0 [2023-12-02 15:43:12,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:43:12,635 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:43:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash 294659406, now seen corresponding path program 1 times [2023-12-02 15:43:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:43:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397582831] [2023-12-02 15:43:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:12,636 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 15:43:12,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:43:12,637 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 15:43:12,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40051d34-058e-41f6-a22e-b9bd44fa378d/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 (20)] Waiting until timeout for monitored process [2023-12-02 15:43:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:15,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 15:43:15,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:43,763 WARN L293 SmtUtils]: Spent 16.90s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:47:54,694 WARN L293 SmtUtils]: Spent 29.77s on a formula simplification that was a NOOP. DAG size: 135 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)