./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ --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 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:00,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:00,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:04:00,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:00,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:00,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:00,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:00,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:00,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:00,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:00,636 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:00,637 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:00,638 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:00,638 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:04:00,639 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:00,639 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:00,640 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:04:00,641 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:04:00,641 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:00,642 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:04:00,643 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:04:00,649 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:04:00,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:00,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:00,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:04:00,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:00,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:00,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:00,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:00,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:00,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:00,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:00,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:00,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:00,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:00,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:00,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:00,657 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:04:00,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:04:00,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:00,659 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:00,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:00,659 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_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a [2023-11-19 05:04:00,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:01,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:01,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:01,019 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:01,020 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:01,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-19 05:04:04,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:04,612 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:04,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-19 05:04:04,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data/edf14192b/0fa2411c016e49e7835801f169ceac41/FLAG4b1e0c5e1 [2023-11-19 05:04:04,646 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data/edf14192b/0fa2411c016e49e7835801f169ceac41 [2023-11-19 05:04:04,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:04,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:04,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:04,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:04,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:04,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:04" (1/1) ... [2023-11-19 05:04:04,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512c6e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:04, skipping insertion in model container [2023-11-19 05:04:04,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:04" (1/1) ... [2023-11-19 05:04:04,737 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:04,973 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_039687cd-e6a4-4ccb-a4d3-518a1926566c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-19 05:04:05,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:05,298 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:05,311 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_039687cd-e6a4-4ccb-a4d3-518a1926566c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-19 05:04:05,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:05,559 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:05,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05 WrapperNode [2023-11-19 05:04:05,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:05,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:05,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:05,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:05,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,882 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1912 [2023-11-19 05:04:05,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:05,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:05,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:05,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:05,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:06,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:06,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:06,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:06,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:06,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:06,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:06,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:06,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:06,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:06,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:06,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:06,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:06,514 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:06,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:08,306 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:11,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:11,180 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:04:11,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:11 BoogieIcfgContainer [2023-11-19 05:04:11,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:11,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:11,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:11,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:11,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:04" (1/3) ... [2023-11-19 05:04:11,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f126cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:11, skipping insertion in model container [2023-11-19 05:04:11,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05" (2/3) ... [2023-11-19 05:04:11,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f126cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:11, skipping insertion in model container [2023-11-19 05:04:11,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:11" (3/3) ... [2023-11-19 05:04:11,197 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal1.c [2023-11-19 05:04:11,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:11,223 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:04:11,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:11,298 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;@52c43360, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:11,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:04:11,304 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) [2023-11-19 05:04:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:04:11,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:11,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:04:11,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:04:11,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:11,322 INFO L85 PathProgramCache]: Analyzing trace with hash 43686310, now seen corresponding path program 1 times [2023-11-19 05:04:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579630078] [2023-11-19 05:04:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:04:12,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:04:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:04:12,630 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:04:12,634 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:04:12,635 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:04:12,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:04:12,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:04:12,647 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:04:12,704 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 05:04:12,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:04:12 BoogieIcfgContainer [2023-11-19 05:04:12,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:04:12,737 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:04:12,737 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:04:12,737 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:04:12,738 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:11" (3/4) ... [2023-11-19 05:04:12,742 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:04:12,743 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:04:12,745 INFO L158 Benchmark]: Toolchain (without parser) took 8090.13ms. Allocated memory was 155.2MB in the beginning and 398.5MB in the end (delta: 243.3MB). Free memory was 110.8MB in the beginning and 134.6MB in the end (delta: -23.8MB). Peak memory consumption was 221.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:12,746 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 102.8MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:04:12,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 909.20ms. Allocated memory is still 155.2MB. Free memory was 110.8MB in the beginning and 72.5MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-19 05:04:12,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 315.49ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 72.5MB in the beginning and 161.6MB in the end (delta: -89.1MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2023-11-19 05:04:12,754 INFO L158 Benchmark]: Boogie Preprocessor took 197.18ms. Allocated memory is still 218.1MB. Free memory was 161.6MB in the beginning and 151.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:04:12,755 INFO L158 Benchmark]: RCFGBuilder took 5103.09ms. Allocated memory was 218.1MB in the beginning and 398.5MB in the end (delta: 180.4MB). Free memory was 151.1MB in the beginning and 243.7MB in the end (delta: -92.6MB). Peak memory consumption was 162.2MB. Max. memory is 16.1GB. [2023-11-19 05:04:12,756 INFO L158 Benchmark]: TraceAbstraction took 1547.39ms. Allocated memory is still 398.5MB. Free memory was 242.6MB in the beginning and 134.6MB in the end (delta: 108.0MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:12,756 INFO L158 Benchmark]: Witness Printer took 6.24ms. Allocated memory is still 398.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:04:12,764 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 102.8MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 909.20ms. Allocated memory is still 155.2MB. Free memory was 110.8MB in the beginning and 72.5MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 315.49ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 72.5MB in the beginning and 161.6MB in the end (delta: -89.1MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 197.18ms. Allocated memory is still 218.1MB. Free memory was 161.6MB in the beginning and 151.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 5103.09ms. Allocated memory was 218.1MB in the beginning and 398.5MB in the end (delta: 180.4MB). Free memory was 151.1MB in the beginning and 243.7MB in the end (delta: -92.6MB). Peak memory consumption was 162.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1547.39ms. Allocated memory is still 398.5MB. Free memory was 242.6MB in the beginning and 134.6MB in the end (delta: 108.0MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. * Witness Printer took 6.24ms. Allocated memory is still 398.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 bitwiseOr at line 261, overapproximation of bitwiseAnd at line 190. 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_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 32); [L30] const SORT_6 msb_SORT_6 = (SORT_6)1 << (32 - 1); [L32] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L33] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L35] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 64); [L36] const SORT_14 msb_SORT_14 = (SORT_14)1 << (64 - 1); [L38] const SORT_1 var_56 = 0; [L39] const SORT_6 var_60 = 0; [L40] const SORT_1 var_73 = 1; [L41] const SORT_14 var_77 = 0; [L42] const SORT_10 var_98 = 0; [L44] SORT_1 input_2; [L45] SORT_1 input_3; [L46] SORT_1 input_4; [L47] SORT_1 input_5; [L48] SORT_6 input_7; [L49] SORT_6 input_8; [L50] SORT_1 input_9; [L51] SORT_10 input_11; [L52] SORT_1 input_12; [L53] SORT_1 input_13; [L54] SORT_14 input_15; [L55] SORT_10 input_16; [L56] SORT_1 input_17; [L57] SORT_6 input_18; [L58] SORT_1 input_19; [L59] SORT_10 input_20; [L60] SORT_10 input_21; [L61] SORT_6 input_22; [L62] SORT_6 input_23; [L63] SORT_1 input_24; [L64] SORT_14 input_25; [L65] SORT_10 input_26; [L66] SORT_1 input_27; [L67] SORT_6 input_28; [L68] SORT_6 input_29; [L69] SORT_6 input_30; [L70] SORT_6 input_31; [L71] SORT_10 input_32; [L72] SORT_10 input_33; [L73] SORT_10 input_34; [L74] SORT_10 input_35; [L75] SORT_10 input_36; [L76] SORT_10 input_37; [L77] SORT_10 input_38; [L78] SORT_10 input_39; [L79] SORT_1 input_40; [L80] SORT_1 input_41; [L81] SORT_1 input_42; [L82] SORT_1 input_43; [L83] SORT_1 input_44; [L84] SORT_1 input_45; [L85] SORT_14 input_46; [L86] SORT_14 input_47; [L87] SORT_14 input_48; [L88] SORT_14 input_49; [L89] SORT_6 input_50; [L90] SORT_6 input_51; [L91] SORT_1 input_52; [L92] SORT_1 input_53; [L93] SORT_1 input_54; [L94] SORT_1 input_55; [L96] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L96] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L97] SORT_6 state_61 = __VERIFIER_nondet_uint() & mask_SORT_6; [L98] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L98] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L99] SORT_6 state_66 = __VERIFIER_nondet_uint() & mask_SORT_6; [L100] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L100] SORT_14 state_78 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L101] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L101] SORT_14 state_81 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L102] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L102] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L103] SORT_1 state_90 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L104] SORT_1 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L105] SORT_10 state_99 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L106] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L106] SORT_10 state_102 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L107] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L107] SORT_1 state_116 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L108] SORT_1 state_123 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L109] SORT_10 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L110] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L110] SORT_10 state_138 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L111] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L111] SORT_6 state_148 = __VERIFIER_nondet_uint() & mask_SORT_6; [L112] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L112] SORT_6 state_156 = __VERIFIER_nondet_uint() & mask_SORT_6; [L113] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L113] SORT_14 state_170 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L114] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L114] SORT_14 state_173 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L115] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L115] SORT_1 state_176 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L116] SORT_10 state_179 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L117] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L117] SORT_1 state_184 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L118] SORT_1 state_191 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L119] SORT_10 state_196 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L120] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L120] SORT_1 state_212 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L121] SORT_10 state_217 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L122] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L122] SORT_1 state_223 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L123] SORT_10 state_238 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L124] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L124] SORT_6 state_249 = __VERIFIER_nondet_uint() & mask_SORT_6; [L125] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L125] SORT_6 state_282 = __VERIFIER_nondet_uint() & mask_SORT_6; [L127] SORT_1 init_58_arg_1 = var_56; [L128] state_57 = init_58_arg_1 [L129] SORT_6 init_62_arg_1 = var_60; [L130] state_61 = init_62_arg_1 [L131] SORT_1 init_64_arg_1 = var_56; [L132] state_63 = init_64_arg_1 [L133] SORT_6 init_67_arg_1 = var_60; [L134] state_66 = init_67_arg_1 [L135] SORT_14 init_79_arg_1 = var_77; [L136] state_78 = init_79_arg_1 [L137] SORT_14 init_82_arg_1 = var_77; [L138] state_81 = init_82_arg_1 [L139] SORT_1 init_85_arg_1 = var_56; [L140] state_84 = init_85_arg_1 [L141] SORT_1 init_91_arg_1 = var_56; [L142] state_90 = init_91_arg_1 [L143] SORT_1 init_94_arg_1 = var_56; [L144] state_93 = init_94_arg_1 [L145] SORT_10 init_100_arg_1 = var_98; [L146] state_99 = init_100_arg_1 [L147] SORT_10 init_103_arg_1 = var_98; [L148] state_102 = init_103_arg_1 [L149] SORT_1 init_117_arg_1 = var_56; [L150] state_116 = init_117_arg_1 [L151] SORT_1 init_124_arg_1 = var_56; [L152] state_123 = init_124_arg_1 [L153] SORT_10 init_136_arg_1 = var_98; [L154] state_135 = init_136_arg_1 [L155] SORT_10 init_139_arg_1 = var_98; [L156] state_138 = init_139_arg_1 [L157] SORT_6 init_149_arg_1 = var_60; [L158] state_148 = init_149_arg_1 [L159] SORT_6 init_157_arg_1 = var_60; [L160] state_156 = init_157_arg_1 [L161] SORT_14 init_171_arg_1 = var_77; [L162] state_170 = init_171_arg_1 [L163] SORT_14 init_174_arg_1 = var_77; [L164] state_173 = init_174_arg_1 [L165] SORT_1 init_177_arg_1 = var_56; [L166] state_176 = init_177_arg_1 [L167] SORT_10 init_180_arg_1 = var_98; [L168] state_179 = init_180_arg_1 [L169] SORT_1 init_185_arg_1 = var_56; [L170] state_184 = init_185_arg_1 [L171] SORT_1 init_192_arg_1 = var_56; [L172] state_191 = init_192_arg_1 [L173] SORT_10 init_197_arg_1 = var_98; [L174] state_196 = init_197_arg_1 [L175] SORT_1 init_213_arg_1 = var_56; [L176] state_212 = init_213_arg_1 [L177] SORT_10 init_218_arg_1 = var_98; [L178] state_217 = init_218_arg_1 [L179] SORT_1 init_224_arg_1 = var_56; [L180] state_223 = init_224_arg_1 [L181] SORT_10 init_239_arg_1 = var_98; [L182] state_238 = init_239_arg_1 [L183] SORT_6 init_250_arg_1 = var_60; [L184] state_249 = init_250_arg_1 [L185] SORT_6 init_283_arg_1 = var_60; [L186] state_282 = init_283_arg_1 VAL [init_100_arg_1=0, init_103_arg_1=0, init_117_arg_1=0, init_124_arg_1=0, init_136_arg_1=0, init_139_arg_1=0, init_149_arg_1=0, init_157_arg_1=0, init_171_arg_1=0, init_174_arg_1=0, init_177_arg_1=0, init_180_arg_1=0, init_185_arg_1=0, init_192_arg_1=0, init_197_arg_1=0, init_213_arg_1=0, init_218_arg_1=0, init_224_arg_1=0, init_239_arg_1=0, init_250_arg_1=0, init_283_arg_1=0, init_58_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_67_arg_1=0, init_79_arg_1=0, init_82_arg_1=0, init_85_arg_1=0, init_91_arg_1=0, init_94_arg_1=0, mask_SORT_10=15, mask_SORT_14=18446744073709551615, mask_SORT_1=1, mask_SORT_6=4294967295, msb_SORT_10=8, msb_SORT_14=9223372036854775808, msb_SORT_1=1, msb_SORT_6=2147483648, state_102=0, state_116=0, state_123=0, state_135=0, state_138=0, state_148=0, state_156=0, state_170=0, state_173=0, state_176=0, state_179=0, state_184=0, state_191=0, state_196=0, state_212=0, state_217=0, state_223=0, state_238=0, state_249=0, state_282=0, state_57=0, state_61=0, state_63=0, state_66=0, state_78=0, state_81=0, state_84=0, state_90=0, state_93=0, state_99=0, var_56=0, var_60=0, var_73=1, var_77=0, var_98=0] [L189] input_2 = __VERIFIER_nondet_uchar() [L190] EXPR input_2 & mask_SORT_1 [L190] input_2 = input_2 & mask_SORT_1 [L191] input_3 = __VERIFIER_nondet_uchar() [L192] input_4 = __VERIFIER_nondet_uchar() [L193] input_5 = __VERIFIER_nondet_uchar() [L194] input_7 = __VERIFIER_nondet_uint() [L195] input_8 = __VERIFIER_nondet_uint() [L196] input_9 = __VERIFIER_nondet_uchar() [L197] EXPR input_9 & mask_SORT_1 [L197] input_9 = input_9 & mask_SORT_1 [L198] input_11 = __VERIFIER_nondet_uchar() [L199] input_12 = __VERIFIER_nondet_uchar() [L200] input_13 = __VERIFIER_nondet_uchar() [L201] input_15 = __VERIFIER_nondet_ulong() [L202] input_16 = __VERIFIER_nondet_uchar() [L203] input_17 = __VERIFIER_nondet_uchar() [L204] input_18 = __VERIFIER_nondet_uint() [L205] input_19 = __VERIFIER_nondet_uchar() [L206] input_20 = __VERIFIER_nondet_uchar() [L207] input_21 = __VERIFIER_nondet_uchar() [L208] input_22 = __VERIFIER_nondet_uint() [L209] input_23 = __VERIFIER_nondet_uint() [L210] input_24 = __VERIFIER_nondet_uchar() [L211] input_25 = __VERIFIER_nondet_ulong() [L212] input_26 = __VERIFIER_nondet_uchar() [L213] input_27 = __VERIFIER_nondet_uchar() [L214] input_28 = __VERIFIER_nondet_uint() [L215] input_29 = __VERIFIER_nondet_uint() [L216] input_30 = __VERIFIER_nondet_uint() [L217] input_31 = __VERIFIER_nondet_uint() [L218] input_32 = __VERIFIER_nondet_uchar() [L219] input_33 = __VERIFIER_nondet_uchar() [L220] input_34 = __VERIFIER_nondet_uchar() [L221] input_35 = __VERIFIER_nondet_uchar() [L222] input_36 = __VERIFIER_nondet_uchar() [L223] input_37 = __VERIFIER_nondet_uchar() [L224] input_38 = __VERIFIER_nondet_uchar() [L225] input_39 = __VERIFIER_nondet_uchar() [L226] input_40 = __VERIFIER_nondet_uchar() [L227] input_41 = __VERIFIER_nondet_uchar() [L228] input_42 = __VERIFIER_nondet_uchar() [L229] input_43 = __VERIFIER_nondet_uchar() [L230] input_44 = __VERIFIER_nondet_uchar() [L231] input_45 = __VERIFIER_nondet_uchar() [L232] input_46 = __VERIFIER_nondet_ulong() [L233] input_47 = __VERIFIER_nondet_ulong() [L234] input_48 = __VERIFIER_nondet_ulong() [L235] input_49 = __VERIFIER_nondet_ulong() [L236] input_50 = __VERIFIER_nondet_uint() [L237] input_51 = __VERIFIER_nondet_uint() [L238] input_52 = __VERIFIER_nondet_uchar() [L239] input_53 = __VERIFIER_nondet_uchar() [L240] input_54 = __VERIFIER_nondet_uchar() [L241] input_55 = __VERIFIER_nondet_uchar() [L244] SORT_1 var_59_arg_0 = state_57; [L245] SORT_1 var_59 = ~var_59_arg_0; [L246] SORT_1 var_65_arg_0 = state_63; [L247] SORT_6 var_65_arg_1 = state_61; [L248] SORT_6 var_65_arg_2 = input_18; [L249] SORT_6 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L250] EXPR var_65 & mask_SORT_6 [L250] var_65 = var_65 & mask_SORT_6 [L251] SORT_1 var_68_arg_0 = state_63; [L252] SORT_6 var_68_arg_1 = state_66; [L253] SORT_6 var_68_arg_2 = input_18; [L254] SORT_6 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L255] EXPR var_68 & mask_SORT_6 [L255] var_68 = var_68 & mask_SORT_6 [L256] SORT_6 var_69_arg_0 = var_65; [L257] SORT_6 var_69_arg_1 = var_68; [L258] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L259] SORT_1 var_70_arg_0 = var_59; [L260] SORT_1 var_70_arg_1 = var_69; [L261] EXPR var_70_arg_0 | var_70_arg_1 [L261] SORT_1 var_70 = var_70_arg_0 | var_70_arg_1; [L262] SORT_1 var_74_arg_0 = var_70; [L263] SORT_1 var_74 = ~var_74_arg_0; [L264] SORT_1 var_75_arg_0 = var_73; [L265] SORT_1 var_75_arg_1 = var_74; [L266] EXPR var_75_arg_0 & var_75_arg_1 [L266] SORT_1 var_75 = var_75_arg_0 & var_75_arg_1; [L267] EXPR var_75 & mask_SORT_1 [L267] var_75 = var_75 & mask_SORT_1 [L268] SORT_1 bad_76_arg_0 = var_75; [L269] CALL __VERIFIER_assert(!(bad_76_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: 1.4s, 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, 0.8s 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 [2023-11-19 05:04:12,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ --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 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:15,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:15,675 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-19 05:04:15,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:15,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:15,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:15,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:15,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:15,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:15,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:15,744 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:15,745 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:15,745 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:15,747 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:15,747 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:15,748 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:15,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:15,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:15,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:15,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:15,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:15,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:15,752 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:04:15,753 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:04:15,753 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:04:15,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:15,754 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:15,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:15,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:04:15,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:15,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:15,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:15,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:15,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:15,758 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:04:15,759 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:04:15,759 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:15,759 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:15,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:15,760 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_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a [2023-11-19 05:04:16,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:16,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:16,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:16,221 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:16,222 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:16,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-19 05:04:19,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:19,848 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:19,848 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-19 05:04:19,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data/14592c2e7/920873b168144d48846ba1a6dd5ba95c/FLAGa7f4da124 [2023-11-19 05:04:19,885 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/data/14592c2e7/920873b168144d48846ba1a6dd5ba95c [2023-11-19 05:04:19,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:19,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:19,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:19,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:19,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:19,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:19" (1/1) ... [2023-11-19 05:04:19,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f63cfaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:19, skipping insertion in model container [2023-11-19 05:04:19,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:19" (1/1) ... [2023-11-19 05:04:19,962 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:20,151 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_039687cd-e6a4-4ccb-a4d3-518a1926566c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-19 05:04:20,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:20,414 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:20,428 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_039687cd-e6a4-4ccb-a4d3-518a1926566c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-19 05:04:20,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:20,532 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:20,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20 WrapperNode [2023-11-19 05:04:20,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:20,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:20,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:20,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:20,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,708 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1160 [2023-11-19 05:04:20,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:20,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:20,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:20,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:20,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:20,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:20,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:20,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:20,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2023-11-19 05:04:20,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:20,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:20,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:20,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:04:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:21,260 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:21,263 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:22,710 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:22,718 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:22,718 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:04:22,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:22 BoogieIcfgContainer [2023-11-19 05:04:22,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:22,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:22,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:22,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:22,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:19" (1/3) ... [2023-11-19 05:04:22,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69937047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:22, skipping insertion in model container [2023-11-19 05:04:22,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (2/3) ... [2023-11-19 05:04:22,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69937047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:22, skipping insertion in model container [2023-11-19 05:04:22,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:22" (3/3) ... [2023-11-19 05:04:22,754 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal1.c [2023-11-19 05:04:22,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:22,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:04:22,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:22,834 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;@198d8711, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:22,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:04:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:04:22,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:22,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:04:22,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:04:22,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-19 05:04:22,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:04:22,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295894174] [2023-11-19 05:04:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:22,877 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 [2023-11-19 05:04:22,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:04:22,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:04:22,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:04:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:23,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:04:23,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:23,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:23,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:04:23,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295894174] [2023-11-19 05:04:23,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295894174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:23,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:23,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:04:23,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758983576] [2023-11-19 05:04:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:23,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:04:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:23,565 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-19 05:04:23,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:23,858 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-19 05:04:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:04:23,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2023-11-19 05:04:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:23,869 INFO L225 Difference]: With dead ends: 19 [2023-11-19 05:04:23,869 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 05:04:23,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:04:23,876 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:23,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:04:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 05:04:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 05:04:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2023-11-19 05:04:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 05:04:23,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 05:04:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:23,911 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 05:04:23,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-19 05:04:23,912 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 05:04:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:04:23,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:23,912 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:23,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:04:24,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:04:24,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:04:24,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-19 05:04:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:04:24,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749460169] [2023-11-19 05:04:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:24,121 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 [2023-11-19 05:04:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:04:24,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:04:24,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:04:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:24,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 05:04:24,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:25,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:26,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:04:26,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749460169] [2023-11-19 05:04:26,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749460169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2008242289] [2023-11-19 05:04:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:26,350 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:04:26,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:04:26,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:04:26,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 05:04:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:27,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 05:04:27,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:28,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:29,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2008242289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752633139] [2023-11-19 05:04:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:29,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:29,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:29,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:04:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:30,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 05:04:30,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:30,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752633139] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:31,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:04:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2023-11-19 05:04:31,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430714339] [2023-11-19 05:04:31,841 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:31,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 05:04:31,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:04:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 05:04:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:04:31,846 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2023-11-19 05:04:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:32,454 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-19 05:04:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:04:32,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 8 [2023-11-19 05:04:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:32,455 INFO L225 Difference]: With dead ends: 15 [2023-11-19 05:04:32,455 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 05:04:32,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:04:32,457 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:32,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:04:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 05:04:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-19 05:04:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2023-11-19 05:04:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 05:04:32,463 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-19 05:04:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:32,463 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 05:04:32,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2023-11-19 05:04:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 05:04:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:04:32,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:32,465 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 05:04:32,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:32,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 05:04:32,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-19 05:04:33,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:04:33,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:04:33,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-19 05:04:33,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:04:33,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994781984] [2023-11-19 05:04:33,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:04:33,105 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 [2023-11-19 05:04:33,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:04:33,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:04:33,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039687cd-e6a4-4ccb-a4d3-518a1926566c/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:04:34,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:04:34,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:04:34,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 185 conjunts are in the unsatisfiable core [2023-11-19 05:04:34,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:42,728 INFO L327 TraceCheckSpWp]: Computing backward predicates...