./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 64bit --witnessprinter.graph.data.programhash 8f99c9b906e0ce9dfb5a1fdac7e796a2c68c541e986f60427db8a196999b6c01 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:03:51,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:03:51,861 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:03:51,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:03:51,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:03:51,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:03:51,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:03:51,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:03:51,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:03:51,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:03:51,894 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:03:51,895 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:03:51,895 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:03:51,896 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:03:51,897 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:03:51,897 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:03:51,898 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:03:51,898 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:03:51,899 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:03:51,899 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:03:51,900 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:03:51,901 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:03:51,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:03:51,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:03:51,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:03:51,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:03:51,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:03:51,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:03:51,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:03:51,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:03:51,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:03:51,906 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:03:51,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:03:51,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:03:51,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:03:51,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:03:51,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:03:51,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:03:51,908 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:03:51,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:03:51,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:03:51,909 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:03:51,909 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:03:51,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:03:51,910 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_1db25323-e0e0-4684-9c69-ece07cbbc552/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f99c9b906e0ce9dfb5a1fdac7e796a2c68c541e986f60427db8a196999b6c01 [2023-12-02 13:03:52,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:03:52,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:03:52,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:03:52,190 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:03:52,190 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:03:52,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c [2023-12-02 13:03:54,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:03:55,248 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:03:55,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c [2023-12-02 13:03:55,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data/1e58992ba/e0a16905d1b44a579b5b9707330ee97a/FLAG3e5a974e4 [2023-12-02 13:03:55,279 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data/1e58992ba/e0a16905d1b44a579b5b9707330ee97a [2023-12-02 13:03:55,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:03:55,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:03:55,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:03:55,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:03:55,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:03:55,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:03:55" (1/1) ... [2023-12-02 13:03:55,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728061fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:55, skipping insertion in model container [2023-12-02 13:03:55,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:03:55" (1/1) ... [2023-12-02 13:03:55,359 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:03:55,521 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_1db25323-e0e0-4684-9c69-ece07cbbc552/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c[1173,1186] [2023-12-02 13:03:55,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:03:55,861 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:03:55,870 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_1db25323-e0e0-4684-9c69-ece07cbbc552/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c[1173,1186] [2023-12-02 13:03:56,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:03:56,039 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:03:56,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56 WrapperNode [2023-12-02 13:03:56,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:03:56,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:03:56,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:03:56,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:03:56,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:56,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:56,654 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6069 [2023-12-02 13:03:56,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:03:56,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:03:56,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:03:56,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:03:56,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:56,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:56,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:56,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:56,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:57,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:57,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:57,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:57,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:03:57,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:03:57,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:03:57,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:03:57,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (1/1) ... [2023-12-02 13:03:57,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:03:57,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:03:57,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:03:57,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:03:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:03:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:03:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:03:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:03:57,812 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:03:57,814 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:04:02,050 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:04:09,610 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:04:09,610 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:04:09,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:09 BoogieIcfgContainer [2023-12-02 13:04:09,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:04:09,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:04:09,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:04:09,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:04:09,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:03:55" (1/3) ... [2023-12-02 13:04:09,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:09, skipping insertion in model container [2023-12-02 13:04:09,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:03:56" (2/3) ... [2023-12-02 13:04:09,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:09, skipping insertion in model container [2023-12-02 13:04:09,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:09" (3/3) ... [2023-12-02 13:04:09,619 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.4.prop1-func-interl.c [2023-12-02 13:04:09,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:04:09,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:04:09,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:04:09,694 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;@13062617, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:04:09,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:04:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 13:04:09,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:09,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 13:04:09,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:04:09,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash 234588570, now seen corresponding path program 1 times [2023-12-02 13:04:09,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:09,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90954120] [2023-12-02 13:04:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:04:10,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:04:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:04:10,706 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:04:10,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:04:10,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:04:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:04:10,716 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 13:04:10,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:04:10,754 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 13:04:10,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:04:10 BoogieIcfgContainer [2023-12-02 13:04:10,770 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:04:10,771 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:04:10,771 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:04:10,772 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:04:10,772 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:09" (3/4) ... [2023-12-02 13:04:10,775 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:04:10,776 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:04:10,777 INFO L158 Benchmark]: Toolchain (without parser) took 15494.12ms. Allocated memory was 182.5MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 133.7MB in the beginning and 421.4MB in the end (delta: -287.7MB). Peak memory consumption was 786.8MB. Max. memory is 16.1GB. [2023-12-02 13:04:10,778 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:04:10,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 756.00ms. Allocated memory is still 182.5MB. Free memory was 133.7MB in the beginning and 63.3MB in the end (delta: 70.4MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2023-12-02 13:04:10,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 613.32ms. Allocated memory is still 182.5MB. Free memory was 63.3MB in the beginning and 72.9MB in the end (delta: -9.7MB). Peak memory consumption was 103.7MB. Max. memory is 16.1GB. [2023-12-02 13:04:10,780 INFO L158 Benchmark]: Boogie Preprocessor took 728.17ms. Allocated memory was 182.5MB in the beginning and 308.3MB in the end (delta: 125.8MB). Free memory was 72.9MB in the beginning and 157.6MB in the end (delta: -84.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-12-02 13:04:10,781 INFO L158 Benchmark]: RCFGBuilder took 12228.03ms. Allocated memory was 308.3MB in the beginning and 1.3GB in the end (delta: 947.9MB). Free memory was 157.6MB in the beginning and 543.0MB in the end (delta: -385.4MB). Peak memory consumption was 797.4MB. Max. memory is 16.1GB. [2023-12-02 13:04:10,782 INFO L158 Benchmark]: TraceAbstraction took 1156.85ms. Allocated memory is still 1.3GB. Free memory was 543.0MB in the beginning and 422.4MB in the end (delta: 120.6MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. [2023-12-02 13:04:10,783 INFO L158 Benchmark]: Witness Printer took 4.98ms. Allocated memory is still 1.3GB. Free memory was 422.4MB in the beginning and 421.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:04:10,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 756.00ms. Allocated memory is still 182.5MB. Free memory was 133.7MB in the beginning and 63.3MB in the end (delta: 70.4MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 613.32ms. Allocated memory is still 182.5MB. Free memory was 63.3MB in the beginning and 72.9MB in the end (delta: -9.7MB). Peak memory consumption was 103.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 728.17ms. Allocated memory was 182.5MB in the beginning and 308.3MB in the end (delta: 125.8MB). Free memory was 72.9MB in the beginning and 157.6MB in the end (delta: -84.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * RCFGBuilder took 12228.03ms. Allocated memory was 308.3MB in the beginning and 1.3GB in the end (delta: 947.9MB). Free memory was 157.6MB in the beginning and 543.0MB in the end (delta: -385.4MB). Peak memory consumption was 797.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1156.85ms. Allocated memory is still 1.3GB. Free memory was 543.0MB in the beginning and 422.4MB in the end (delta: 120.6MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. * Witness Printer took 4.98ms. Allocated memory is still 1.3GB. Free memory was 422.4MB in the beginning and 421.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: 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 bitwiseAnd at line 163. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L32] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L33] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L35] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L36] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L38] const SORT_2 var_5 = 0; [L39] const SORT_1 var_30 = 0; [L40] const SORT_4 var_63 = 1; [L41] const SORT_4 var_64 = 0; [L42] const SORT_2 var_74 = 0; [L43] const SORT_2 var_76 = 1; [L44] const SORT_3 var_91 = 0; [L45] const SORT_4 var_227 = 3; [L46] const SORT_2 var_239 = 3; [L47] const SORT_4 var_241 = 6; [L48] const SORT_4 var_343 = 2; [L50] SORT_1 input_73; [L51] SORT_1 input_75; [L52] SORT_1 input_80; [L53] SORT_1 input_81; [L54] SORT_1 input_85; [L55] SORT_1 input_86; [L56] SORT_1 input_90; [L57] SORT_1 input_98; [L58] SORT_1 input_105; [L59] SORT_1 input_112; [L60] SORT_1 input_116; [L61] SORT_1 input_117; [L62] SORT_1 input_131; [L63] SORT_1 input_135; [L64] SORT_1 input_136; [L65] SORT_1 input_150; [L66] SORT_1 input_154; [L67] SORT_1 input_155; [L68] SORT_1 input_176; [L69] SORT_1 input_179; [L70] SORT_1 input_195; [L71] SORT_1 input_198; [L72] SORT_1 input_214; [L73] SORT_1 input_217; [L75] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L75] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L76] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L77] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L78] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L79] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L80] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L81] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L82] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L83] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L84] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L85] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L86] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L87] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L88] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L89] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L90] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L91] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L92] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L93] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L94] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L95] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L96] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L97] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L98] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L99] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L100] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L101] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L102] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_2 init_7_arg_1 = var_5; [L105] state_6 = init_7_arg_1 [L106] SORT_2 init_9_arg_1 = var_5; [L107] state_8 = init_9_arg_1 [L108] SORT_2 init_11_arg_1 = var_5; [L109] state_10 = init_11_arg_1 [L110] SORT_2 init_13_arg_1 = var_5; [L111] state_12 = init_13_arg_1 [L112] SORT_2 init_15_arg_1 = var_5; [L113] state_14 = init_15_arg_1 [L114] SORT_2 init_17_arg_1 = var_5; [L115] state_16 = init_17_arg_1 [L116] SORT_2 init_19_arg_1 = var_5; [L117] state_18 = init_19_arg_1 [L118] SORT_2 init_21_arg_1 = var_5; [L119] state_20 = init_21_arg_1 [L120] SORT_2 init_23_arg_1 = var_5; [L121] state_22 = init_23_arg_1 [L122] SORT_2 init_25_arg_1 = var_5; [L123] state_24 = init_25_arg_1 [L124] SORT_2 init_27_arg_1 = var_5; [L125] state_26 = init_27_arg_1 [L126] SORT_2 init_29_arg_1 = var_5; [L127] state_28 = init_29_arg_1 [L128] SORT_1 init_32_arg_1 = var_30; [L129] state_31 = init_32_arg_1 [L130] SORT_1 init_34_arg_1 = var_30; [L131] state_33 = init_34_arg_1 [L132] SORT_1 init_36_arg_1 = var_30; [L133] state_35 = init_36_arg_1 [L134] SORT_1 init_38_arg_1 = var_30; [L135] state_37 = init_38_arg_1 [L136] SORT_1 init_40_arg_1 = var_30; [L137] state_39 = init_40_arg_1 [L138] SORT_1 init_42_arg_1 = var_30; [L139] state_41 = init_42_arg_1 [L140] SORT_1 init_44_arg_1 = var_30; [L141] state_43 = init_44_arg_1 [L142] SORT_1 init_46_arg_1 = var_30; [L143] state_45 = init_46_arg_1 [L144] SORT_1 init_48_arg_1 = var_30; [L145] state_47 = init_48_arg_1 [L146] SORT_1 init_50_arg_1 = var_30; [L147] state_49 = init_50_arg_1 [L148] SORT_1 init_52_arg_1 = var_30; [L149] state_51 = init_52_arg_1 [L150] SORT_1 init_54_arg_1 = var_30; [L151] state_53 = init_54_arg_1 [L152] SORT_1 init_56_arg_1 = var_30; [L153] state_55 = init_56_arg_1 [L154] SORT_1 init_58_arg_1 = var_30; [L155] state_57 = init_58_arg_1 [L156] SORT_1 init_60_arg_1 = var_30; [L157] state_59 = init_60_arg_1 [L158] SORT_1 init_62_arg_1 = var_30; [L159] state_61 = init_62_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=16777215, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_61=0, state_6=0, state_8=0, var_227=3, var_239=3, var_241=6, var_30=0, var_343=2, var_5=0, var_63=1, var_64=0, var_74=0, var_76=1, var_91=0] [L162] input_73 = __VERIFIER_nondet_uchar() [L163] EXPR input_73 & mask_SORT_1 [L163] input_73 = input_73 & mask_SORT_1 [L164] input_75 = __VERIFIER_nondet_uchar() [L165] EXPR input_75 & mask_SORT_1 [L165] input_75 = input_75 & mask_SORT_1 [L166] input_80 = __VERIFIER_nondet_uchar() [L167] EXPR input_80 & mask_SORT_1 [L167] input_80 = input_80 & mask_SORT_1 [L168] input_81 = __VERIFIER_nondet_uchar() [L169] EXPR input_81 & mask_SORT_1 [L169] input_81 = input_81 & mask_SORT_1 [L170] input_85 = __VERIFIER_nondet_uchar() [L171] EXPR input_85 & mask_SORT_1 [L171] input_85 = input_85 & mask_SORT_1 [L172] input_86 = __VERIFIER_nondet_uchar() [L173] EXPR input_86 & mask_SORT_1 [L173] input_86 = input_86 & mask_SORT_1 [L174] input_90 = __VERIFIER_nondet_uchar() [L175] EXPR input_90 & mask_SORT_1 [L175] input_90 = input_90 & mask_SORT_1 [L176] input_98 = __VERIFIER_nondet_uchar() [L177] EXPR input_98 & mask_SORT_1 [L177] input_98 = input_98 & mask_SORT_1 [L178] input_105 = __VERIFIER_nondet_uchar() [L179] EXPR input_105 & mask_SORT_1 [L179] input_105 = input_105 & mask_SORT_1 [L180] input_112 = __VERIFIER_nondet_uchar() [L181] EXPR input_112 & mask_SORT_1 [L181] input_112 = input_112 & mask_SORT_1 [L182] input_116 = __VERIFIER_nondet_uchar() [L183] EXPR input_116 & mask_SORT_1 [L183] input_116 = input_116 & mask_SORT_1 [L184] input_117 = __VERIFIER_nondet_uchar() [L185] EXPR input_117 & mask_SORT_1 [L185] input_117 = input_117 & mask_SORT_1 [L186] input_131 = __VERIFIER_nondet_uchar() [L187] EXPR input_131 & mask_SORT_1 [L187] input_131 = input_131 & mask_SORT_1 [L188] input_135 = __VERIFIER_nondet_uchar() [L189] EXPR input_135 & mask_SORT_1 [L189] input_135 = input_135 & mask_SORT_1 [L190] input_136 = __VERIFIER_nondet_uchar() [L191] EXPR input_136 & mask_SORT_1 [L191] input_136 = input_136 & mask_SORT_1 [L192] input_150 = __VERIFIER_nondet_uchar() [L193] EXPR input_150 & mask_SORT_1 [L193] input_150 = input_150 & mask_SORT_1 [L194] input_154 = __VERIFIER_nondet_uchar() [L195] EXPR input_154 & mask_SORT_1 [L195] input_154 = input_154 & mask_SORT_1 [L196] input_155 = __VERIFIER_nondet_uchar() [L197] EXPR input_155 & mask_SORT_1 [L197] input_155 = input_155 & mask_SORT_1 [L198] input_176 = __VERIFIER_nondet_uchar() [L199] input_179 = __VERIFIER_nondet_uchar() [L200] input_195 = __VERIFIER_nondet_uchar() [L201] input_198 = __VERIFIER_nondet_uchar() [L202] input_214 = __VERIFIER_nondet_uchar() [L203] input_217 = __VERIFIER_nondet_uchar() [L206] SORT_1 var_65_arg_0 = state_39; [L207] SORT_4 var_65_arg_1 = var_63; [L208] SORT_4 var_65_arg_2 = var_64; [L209] SORT_4 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L210] SORT_1 var_66_arg_0 = state_49; [L211] SORT_4 var_66_arg_1 = var_63; [L212] SORT_4 var_66_arg_2 = var_64; [L213] SORT_4 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L214] SORT_4 var_67_arg_0 = var_65; [L215] SORT_4 var_67_arg_1 = var_66; [L216] SORT_4 var_67 = var_67_arg_0 + var_67_arg_1; [L217] SORT_1 var_68_arg_0 = state_59; [L218] SORT_4 var_68_arg_1 = var_63; [L219] SORT_4 var_68_arg_2 = var_64; [L220] SORT_4 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L221] SORT_4 var_69_arg_0 = var_67; [L222] SORT_4 var_69_arg_1 = var_68; [L223] SORT_4 var_69 = var_69_arg_0 + var_69_arg_1; [L224] EXPR var_69 & mask_SORT_4 [L224] var_69 = var_69 & mask_SORT_4 [L225] SORT_4 var_70_arg_0 = var_69; [L226] SORT_4 var_70_arg_1 = var_63; [L227] SORT_1 var_70 = var_70_arg_0 <= var_70_arg_1; [L228] SORT_1 var_71_arg_0 = ~state_61; [L229] EXPR var_71_arg_0 & mask_SORT_1 [L229] var_71_arg_0 = var_71_arg_0 & mask_SORT_1 [L230] SORT_1 var_71_arg_1 = ~var_70; [L231] EXPR var_71_arg_1 & mask_SORT_1 [L231] var_71_arg_1 = var_71_arg_1 & mask_SORT_1 [L232] EXPR var_71_arg_0 & var_71_arg_1 [L232] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L233] EXPR var_71 & mask_SORT_1 [L233] var_71 = var_71 & mask_SORT_1 [L234] SORT_1 bad_72_arg_0 = var_71; [L235] CALL __VERIFIER_assert(!(bad_72_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, 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=7occurred 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, 4 NumberOfCodeBlocks, 4 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 13:04:10,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 64bit --witnessprinter.graph.data.programhash 8f99c9b906e0ce9dfb5a1fdac7e796a2c68c541e986f60427db8a196999b6c01 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:04:12,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:04:12,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 13:04:12,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:04:12,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:04:12,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:04:12,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:04:12,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:04:12,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:04:12,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:04:12,991 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:04:12,992 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:04:12,992 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:04:12,993 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:04:12,993 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:04:12,994 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:04:12,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:04:12,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:04:12,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:04:12,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:04:12,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:04:12,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:04:12,998 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:04:12,999 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:04:12,999 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:04:12,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:04:13,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:04:13,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:04:13,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:04:13,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:04:13,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:04:13,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:04:13,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:04:13,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:04:13,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:04:13,003 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:04:13,004 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:04:13,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:04:13,004 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:04:13,004 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:04:13,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:04:13,005 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_1db25323-e0e0-4684-9c69-ece07cbbc552/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f99c9b906e0ce9dfb5a1fdac7e796a2c68c541e986f60427db8a196999b6c01 [2023-12-02 13:04:13,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:04:13,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:04:13,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:04:13,312 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:04:13,313 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:04:13,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c [2023-12-02 13:04:16,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:04:16,467 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:04:16,468 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c [2023-12-02 13:04:16,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data/d3672b23a/3190e188d3c74ab39e71e8fe7a5af55e/FLAG2c704ffd5 [2023-12-02 13:04:16,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/data/d3672b23a/3190e188d3c74ab39e71e8fe7a5af55e [2023-12-02 13:04:16,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:04:16,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:04:16,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:04:16,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:04:16,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:04:16,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:16" (1/1) ... [2023-12-02 13:04:16,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6ddcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:16, skipping insertion in model container [2023-12-02 13:04:16,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:16" (1/1) ... [2023-12-02 13:04:16,578 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:04:16,741 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_1db25323-e0e0-4684-9c69-ece07cbbc552/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c[1173,1186] [2023-12-02 13:04:17,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:04:17,016 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:04:17,055 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_1db25323-e0e0-4684-9c69-ece07cbbc552/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.4.prop1-func-interl.c[1173,1186] [2023-12-02 13:04:17,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:04:17,221 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:04:17,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17 WrapperNode [2023-12-02 13:04:17,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:04:17,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:04:17,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:04:17,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:04:17,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,355 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1652 [2023-12-02 13:04:17,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:04:17,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:04:17,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:04:17,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:04:17,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:04:17,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:04:17,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:04:17,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:04:17,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (1/1) ... [2023-12-02 13:04:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:04:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:17,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:04:17,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:04:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:04:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:04:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:04:17,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:04:17,888 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:04:17,891 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:04:19,855 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:04:19,973 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:04:19,973 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:04:19,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:19 BoogieIcfgContainer [2023-12-02 13:04:19,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:04:19,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:04:19,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:04:19,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:04:19,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:04:16" (1/3) ... [2023-12-02 13:04:19,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383d6108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:19, skipping insertion in model container [2023-12-02 13:04:19,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:17" (2/3) ... [2023-12-02 13:04:19,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383d6108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:19, skipping insertion in model container [2023-12-02 13:04:19,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:19" (3/3) ... [2023-12-02 13:04:19,983 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.4.prop1-func-interl.c [2023-12-02 13:04:20,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:04:20,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:04:20,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:04:20,057 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;@31921b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:04:20,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:04:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 13:04:20,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:20,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 13:04:20,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:04:20,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 13:04:20,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:04:20,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357708295] [2023-12-02 13:04:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:20,083 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 13:04:20,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:04:20,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:04:20,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:04:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:20,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 13:04:20,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:04:20,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:04:20,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:04:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357708295] [2023-12-02 13:04:20,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357708295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:20,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:04:20,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:04:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966542890] [2023-12-02 13:04:20,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:04:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:04:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:04:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:04:21,001 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:21,280 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 13:04:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:04:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 13:04:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:21,290 INFO L225 Difference]: With dead ends: 16 [2023-12-02 13:04:21,290 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 13:04:21,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:04:21,297 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:21,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:04:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 13:04:21,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 13:04:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 13:04:21,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 13:04:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:21,324 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 13:04:21,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 13:04:21,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 13:04:21,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:21,325 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 13:04:21,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:04:21,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:04:21,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:04:21,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:21,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 13:04:21,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:04:21,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017097035] [2023-12-02 13:04:21,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:21,534 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 13:04:21,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:04:21,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:04:21,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:04:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:23,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 125 conjunts are in the unsatisfiable core [2023-12-02 13:04:23,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:04:24,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:04:29,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:04:29,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017097035] [2023-12-02 13:04:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017097035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:04:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1704906879] [2023-12-02 13:04:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:29,052 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:04:29,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:04:29,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:04:29,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 13:04:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:30,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 127 conjunts are in the unsatisfiable core [2023-12-02 13:04:30,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:04:31,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:04:44,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1704906879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:04:44,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210734032] [2023-12-02 13:04:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:44,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:44,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:44,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:44,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:04:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:45,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-02 13:04:45,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:04:46,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:12,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210734032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:12,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:05:12,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 14 [2023-12-02 13:05:12,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189027088] [2023-12-02 13:05:12,447 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:12,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 13:05:12,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:12,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 13:05:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=146, Unknown=8, NotChecked=0, Total=210 [2023-12-02 13:05:12,449 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:05:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:16,966 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 13:05:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:05:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 13:05:16,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:16,968 INFO L225 Difference]: With dead ends: 14 [2023-12-02 13:05:16,968 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 13:05:16,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 38.8s TimeCoverageRelationStatistics Valid=93, Invalid=205, Unknown=8, NotChecked=0, Total=306 [2023-12-02 13:05:16,970 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:16,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 17 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 13:05:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 13:05:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 13:05:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:05:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 13:05:16,974 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 13:05:16,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:16,974 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 13:05:16,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:05:16,974 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 13:05:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:05:16,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:16,975 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 13:05:16,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 13:05:17,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 13:05:17,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:05:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:17,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:05:17,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-02 13:05:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:17,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36745029] [2023-12-02 13:05:17,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:05:17,580 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 13:05:17,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:17,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:05:17,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:05:20,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:05:20,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:05:20,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 215 conjunts are in the unsatisfiable core [2023-12-02 13:05:20,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:27,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:49,845 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:49,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36745029] [2023-12-02 13:05:49,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36745029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:49,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [413806392] [2023-12-02 13:05:49,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:05:49,846 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:05:49,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:05:49,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:05:49,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 13:05:51,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:05:51,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:05:51,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 304 conjunts are in the unsatisfiable core [2023-12-02 13:05:52,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:06:15,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:07:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:07:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [413806392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:07:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080184920] [2023-12-02 13:07:32,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:07:32,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:32,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:32,060 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:32,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:07:32,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:07:32,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:07:32,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 219 conjunts are in the unsatisfiable core [2023-12-02 13:07:32,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:07:53,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:09:31,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080184920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:09:31,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:09:31,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 21 [2023-12-02 13:09:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884862161] [2023-12-02 13:09:31,521 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:09:31,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 13:09:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:09:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 13:09:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=329, Unknown=47, NotChecked=0, Total=462 [2023-12-02 13:09:31,524 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:09:42,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:09:55,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:10:03,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:10:06,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:10:31,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:10:33,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:10:35,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:10:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:36,884 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-02 13:10:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:10:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 13:10:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:36,892 INFO L225 Difference]: With dead ends: 17 [2023-12-02 13:10:36,892 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 13:10:36,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 261.3s TimeCoverageRelationStatistics Valid=178, Invalid=522, Unknown=56, NotChecked=0, Total=756 [2023-12-02 13:10:36,893 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:36,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 33 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 18.0s Time] [2023-12-02 13:10:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 13:10:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-02 13:10:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:10:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-02 13:10:36,904 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-12-02 13:10:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:36,905 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-02 13:10:36,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:10:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-02 13:10:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 13:10:36,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:36,905 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-02 13:10:36,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 13:10:37,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:10:37,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:10:37,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:10:37,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:10:37,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:37,507 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-12-02 13:10:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:10:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317445994] [2023-12-02 13:10:37,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:10:37,512 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 13:10:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:10:37,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/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 13:10:37,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db25323-e0e0-4684-9c69-ece07cbbc552/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 13:10:44,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 13:10:44,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:10:44,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 3914 conjuncts, 529 conjunts are in the unsatisfiable core [2023-12-02 13:10:44,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:03,816 WARN L293 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 797 DAG size of output: 797 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)