./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:26:09,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:26:09,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 16:26:09,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:26:09,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:26:09,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:26:09,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:26:09,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:26:09,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:26:09,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:26:09,559 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:26:09,559 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:26:09,560 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:26:09,560 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:26:09,561 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:26:09,561 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:26:09,562 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:26:09,562 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:26:09,563 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:26:09,563 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:26:09,564 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:26:09,565 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:26:09,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:26:09,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:26:09,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:26:09,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:26:09,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:26:09,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:26:09,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:26:09,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:26:09,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:26:09,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:26:09,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:26:09,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:26:09,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:26:09,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:26:09,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:26:09,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:26:09,571 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:26:09,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:26:09,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:26:09,572 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:26:09,572 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:26:09,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:26:09,572 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_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb [2023-12-02 16:26:09,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:26:09,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:26:09,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:26:09,819 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:26:09,819 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:26:09,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-12-02 16:26:12,615 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:26:12,775 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:26:12,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-12-02 16:26:12,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data/a3f598e90/d374bd095c3f4f5eaae06395d165c9d6/FLAGd08cf1f09 [2023-12-02 16:26:12,795 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data/a3f598e90/d374bd095c3f4f5eaae06395d165c9d6 [2023-12-02 16:26:12,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:26:12,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:26:12,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:26:12,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:26:12,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:26:12,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:26:12" (1/1) ... [2023-12-02 16:26:12,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4082eda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:12, skipping insertion in model container [2023-12-02 16:26:12,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:26:12" (1/1) ... [2023-12-02 16:26:12,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:26:12,940 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_3c196259-fd4e-4598-8000-7c51c1a250f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-12-02 16:26:12,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:26:12,982 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:26:12,992 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_3c196259-fd4e-4598-8000-7c51c1a250f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-12-02 16:26:13,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:26:13,021 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:26:13,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13 WrapperNode [2023-12-02 16:26:13,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:26:13,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:26:13,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:26:13,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:26:13,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,073 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 110 [2023-12-02 16:26:13,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:26:13,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:26:13,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:26:13,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:26:13,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,099 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:26:13,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:26:13,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:26:13,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:26:13,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (1/1) ... [2023-12-02 16:26:13,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:26:13,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:13,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:26:13,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:26:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:26:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:26:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:26:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:26:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:26:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:26:13,250 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:26:13,252 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:26:13,509 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:26:13,620 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:26:13,620 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:26:13,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:26:13 BoogieIcfgContainer [2023-12-02 16:26:13,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:26:13,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:26:13,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:26:13,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:26:13,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:26:12" (1/3) ... [2023-12-02 16:26:13,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a3078b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:26:13, skipping insertion in model container [2023-12-02 16:26:13,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:26:13" (2/3) ... [2023-12-02 16:26:13,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a3078b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:26:13, skipping insertion in model container [2023-12-02 16:26:13,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:26:13" (3/3) ... [2023-12-02 16:26:13,651 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.factorial4even.c [2023-12-02 16:26:13,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:26:13,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:26:13,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:26:13,727 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;@459b6e3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:26:13,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:26:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:26:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:26:13,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:13,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:26:13,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:13,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash -52199514, now seen corresponding path program 1 times [2023-12-02 16:26:13,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355205385] [2023-12-02 16:26:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:13,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:26:14,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355205385] [2023-12-02 16:26:14,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355205385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:14,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:26:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518885273] [2023-12-02 16:26:14,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:14,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:26:14,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:26:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:26:14,291 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:26:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:14,401 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2023-12-02 16:26:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:26:14,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 16:26:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:14,410 INFO L225 Difference]: With dead ends: 34 [2023-12-02 16:26:14,410 INFO L226 Difference]: Without dead ends: 22 [2023-12-02 16:26:14,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:26:14,416 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:14,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:26:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-02 16:26:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2023-12-02 16:26:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:26:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-12-02 16:26:14,447 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2023-12-02 16:26:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:14,447 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-12-02 16:26:14,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:26:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-12-02 16:26:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 16:26:14,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:14,449 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:14,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:26:14,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:14,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:14,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1001103560, now seen corresponding path program 1 times [2023-12-02 16:26:14,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:14,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128318301] [2023-12-02 16:26:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:14,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:26:14,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:14,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128318301] [2023-12-02 16:26:14,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128318301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:14,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:26:14,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915473165] [2023-12-02 16:26:14,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:14,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:26:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:26:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:26:14,837 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:26:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:14,915 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-12-02 16:26:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:26:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 16:26:14,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:14,917 INFO L225 Difference]: With dead ends: 30 [2023-12-02 16:26:14,917 INFO L226 Difference]: Without dead ends: 28 [2023-12-02 16:26:14,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:26:14,920 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:14,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 48 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:26:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-02 16:26:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-12-02 16:26:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:26:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-12-02 16:26:14,928 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2023-12-02 16:26:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:14,928 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-12-02 16:26:14,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:26:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-12-02 16:26:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 16:26:14,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:14,930 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:14,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:26:14,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:14,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1865440253, now seen corresponding path program 1 times [2023-12-02 16:26:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:14,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075006641] [2023-12-02 16:26:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:14,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:26:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319418996] [2023-12-02 16:26:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:14,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:14,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:14,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:26:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:15,083 WARN L260 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 16:26:15,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:26:15,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:26:16,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075006641] [2023-12-02 16:26:16,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:26:16,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319418996] [2023-12-02 16:26:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319418996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:26:16,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529963887] [2023-12-02 16:26:16,368 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 16:26:16,369 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:26:16,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:26:16,378 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:26:16,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:26:19,369 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:26:19,372 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:26:19,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '307#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 16:26:19,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:26:19,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:26:19,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-12-02 16:26:19,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345358096] [2023-12-02 16:26:19,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:26:19,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 16:26:19,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:19,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 16:26:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2023-12-02 16:26:19,493 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 17 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:26:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:19,867 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2023-12-02 16:26:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:26:19,868 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-12-02 16:26:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:19,869 INFO L225 Difference]: With dead ends: 42 [2023-12-02 16:26:19,869 INFO L226 Difference]: Without dead ends: 40 [2023-12-02 16:26:19,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:26:19,871 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:19,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 49 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:26:19,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-02 16:26:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2023-12-02 16:26:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 16:26:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-12-02 16:26:19,881 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 19 [2023-12-02 16:26:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:19,882 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-12-02 16:26:19,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:26:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-12-02 16:26:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:26:19,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:19,883 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 16:26:19,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:26:20,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:20,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:20,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1329138133, now seen corresponding path program 2 times [2023-12-02 16:26:20,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807451177] [2023-12-02 16:26:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:20,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:20,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:26:20,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691047331] [2023-12-02 16:26:20,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:26:20,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:20,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:20,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:20,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:26:20,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 16:26:20,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:26:20,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-02 16:26:20,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:26:20,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:26:21,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807451177] [2023-12-02 16:26:21,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:26:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691047331] [2023-12-02 16:26:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691047331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:26:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2039593993] [2023-12-02 16:26:21,745 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 16:26:21,745 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:26:21,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:26:21,745 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:26:21,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:26:23,766 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:26:23,769 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:26:23,873 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '595#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 16:26:23,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:26:23,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:26:23,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2023-12-02 16:26:23,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829401248] [2023-12-02 16:26:23,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:26:23,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 16:26:23,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 16:26:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:26:23,876 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 18 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 16:26:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:24,244 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2023-12-02 16:26:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:26:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2023-12-02 16:26:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:24,246 INFO L225 Difference]: With dead ends: 52 [2023-12-02 16:26:24,246 INFO L226 Difference]: Without dead ends: 50 [2023-12-02 16:26:24,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-12-02 16:26:24,247 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:24,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 43 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:26:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-02 16:26:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2023-12-02 16:26:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 16:26:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2023-12-02 16:26:24,260 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 25 [2023-12-02 16:26:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:24,260 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2023-12-02 16:26:24,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 16:26:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2023-12-02 16:26:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 16:26:24,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:24,262 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2023-12-02 16:26:24,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 16:26:24,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:24,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:24,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2013952227, now seen corresponding path program 3 times [2023-12-02 16:26:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:24,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251557521] [2023-12-02 16:26:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:24,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:24,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:26:24,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633292010] [2023-12-02 16:26:24,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:26:24,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:24,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:24,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:24,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:26:24,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:26:24,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:26:24,711 WARN L260 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 145 conjunts are in the unsatisfiable core [2023-12-02 16:26:24,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 16:26:25,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:55,105 WARN L293 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 240 DAG size of output: 138 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:27:24,911 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:27:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 16:27:24,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251557521] [2023-12-02 16:27:24,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:27:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633292010] [2023-12-02 16:27:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633292010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:24,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1360533697] [2023-12-02 16:27:24,917 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 16:27:24,917 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:27:24,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:27:24,917 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:27:24,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:27:26,891 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:27:26,894 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:27:27,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1048#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 16:27:27,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:27:27,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:27:27,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 33 [2023-12-02 16:27:27,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131535996] [2023-12-02 16:27:27,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:27,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 16:27:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 16:27:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:27:27,178 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 14 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 16:27:33,704 WARN L293 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 175 DAG size of output: 49 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:27:35,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:27:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:40,586 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2023-12-02 16:27:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:27:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 14 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) Word has length 45 [2023-12-02 16:27:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:40,588 INFO L225 Difference]: With dead ends: 74 [2023-12-02 16:27:40,588 INFO L226 Difference]: Without dead ends: 72 [2023-12-02 16:27:40,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=414, Invalid=1656, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 16:27:40,590 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:40,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 93 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-02 16:27:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-02 16:27:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-12-02 16:27:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 46 states have internal predecessors, (46), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 16:27:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-12-02 16:27:40,610 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 45 [2023-12-02 16:27:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:40,610 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-12-02 16:27:40,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 14 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 16:27:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-12-02 16:27:40,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 16:27:40,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:40,612 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-12-02 16:27:40,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:27:40,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:40,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1433974453, now seen corresponding path program 4 times [2023-12-02 16:27:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:40,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998121377] [2023-12-02 16:27:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:40,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:27:40,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162628617] [2023-12-02 16:27:40,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 16:27:40,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:40,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:40,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:40,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:27:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:27:41,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:27:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:27:41,300 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:27:41,301 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:27:41,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:27:41,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:27:41,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:41,506 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-12-02 16:27:41,508 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:27:41,548 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:27:41,548 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:27:41,548 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:27:41,548 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:27:41,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:27:41 BoogieIcfgContainer [2023-12-02 16:27:41,562 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:27:41,562 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:27:41,562 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:27:41,562 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:27:41,563 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:26:13" (3/4) ... [2023-12-02 16:27:41,564 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:27:41,565 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:27:41,565 INFO L158 Benchmark]: Toolchain (without parser) took 88767.56ms. Allocated memory was 151.0MB in the beginning and 614.5MB in the end (delta: 463.5MB). Free memory was 112.7MB in the beginning and 533.9MB in the end (delta: -421.3MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2023-12-02 16:27:41,566 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:27:41,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.02ms. Allocated memory is still 151.0MB. Free memory was 112.7MB in the beginning and 101.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 16:27:41,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.91ms. Allocated memory is still 151.0MB. Free memory was 101.2MB in the beginning and 98.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:27:41,567 INFO L158 Benchmark]: Boogie Preprocessor took 33.62ms. Allocated memory is still 151.0MB. Free memory was 98.1MB in the beginning and 96.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:27:41,567 INFO L158 Benchmark]: RCFGBuilder took 532.85ms. Allocated memory is still 151.0MB. Free memory was 96.5MB in the beginning and 120.4MB in the end (delta: -24.0MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2023-12-02 16:27:41,567 INFO L158 Benchmark]: TraceAbstraction took 87917.59ms. Allocated memory was 151.0MB in the beginning and 614.5MB in the end (delta: 463.5MB). Free memory was 120.4MB in the beginning and 535.0MB in the end (delta: -414.6MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2023-12-02 16:27:41,567 INFO L158 Benchmark]: Witness Printer took 3.14ms. Allocated memory is still 614.5MB. Free memory was 535.0MB in the beginning and 533.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:27:41,569 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.02ms. Allocated memory is still 151.0MB. Free memory was 112.7MB in the beginning and 101.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.91ms. Allocated memory is still 151.0MB. Free memory was 101.2MB in the beginning and 98.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.62ms. Allocated memory is still 151.0MB. Free memory was 98.1MB in the beginning and 96.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 532.85ms. Allocated memory is still 151.0MB. Free memory was 96.5MB in the beginning and 120.4MB in the end (delta: -24.0MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * TraceAbstraction took 87917.59ms. Allocated memory was 151.0MB in the beginning and 614.5MB in the end (delta: 463.5MB). Free memory was 120.4MB in the beginning and 535.0MB in the end (delta: -414.6MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Witness Printer took 3.14ms. Allocated memory is still 614.5MB. Free memory was 535.0MB in the beginning and 533.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L34] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L35] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L37] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 1); [L38] const SORT_12 msb_SORT_12 = (SORT_12)1 << (1 - 1); [L40] const SORT_1 var_2 = 1; [L41] const SORT_1 var_11 = mask_SORT_1; [L42] const SORT_1 var_16 = 3; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L45] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L46] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 init_5_arg_1 = var_2; [L49] state_3 = init_5_arg_1 [L50] SORT_1 init_6_arg_1 = var_2; [L51] state_4 = init_6_arg_1 VAL [init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] EXPR var_7 & mask_SORT_1 [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] EXPR var_7 & mask_SORT_1 [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] EXPR var_7 & mask_SORT_1 [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] EXPR var_18_arg_0 & var_18_arg_1 [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] EXPR var_18 & mask_SORT_12 [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=1, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=6, var_15_arg_0=6, var_16=3, var_17=1, var_17_arg_0=4, var_17_arg_1=3, var_18=1, var_18_arg_0=1, var_18_arg_1=6, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=0] [L29] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L29] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.8s, OverallIterations: 6, TraceHistogramMax: 8, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 265 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 232 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 552 IncrementalHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 33 mSDtfsCounter, 552 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 187 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 32.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 63.7s InterpolantComputationTime, 158 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 9417 SizeOfPredicates, 125 NumberOfNonLiveVariables, 501 ConjunctsInSsa, 267 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 165/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 16:27:41,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:27:43,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:27:43,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 16:27:43,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:27:43,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:27:43,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:27:43,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:27:43,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:27:43,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:27:43,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:27:43,637 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:27:43,638 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:27:43,638 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:27:43,639 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:27:43,639 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:27:43,640 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:27:43,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:27:43,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:27:43,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:27:43,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:27:43,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:27:43,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:27:43,644 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:27:43,644 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:27:43,645 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:27:43,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:27:43,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:27:43,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:27:43,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:27:43,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:27:43,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:27:43,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:27:43,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:27:43,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:27:43,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:27:43,649 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:27:43,649 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:43,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:27:43,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:27:43,650 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:27:43,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:27:43,650 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_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9bfc0bfd402f01a909df8198af653a6c40e8b771ded2d89ed782f9da2aa5bbb [2023-12-02 16:27:43,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:27:43,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:27:43,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:27:43,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:27:43,963 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:27:43,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-12-02 16:27:46,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:27:46,970 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:27:46,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-12-02 16:27:46,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data/a3543b44c/00037793d0b54f07a6842887df924fb1/FLAG12612d136 [2023-12-02 16:27:46,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/data/a3543b44c/00037793d0b54f07a6842887df924fb1 [2023-12-02 16:27:46,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:27:46,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:27:47,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:27:47,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:27:47,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:27:47,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:27:46" (1/1) ... [2023-12-02 16:27:47,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515ecfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47, skipping insertion in model container [2023-12-02 16:27:47,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:27:46" (1/1) ... [2023-12-02 16:27:47,033 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:27:47,181 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_3c196259-fd4e-4598-8000-7c51c1a250f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-12-02 16:27:47,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:27:47,219 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:27:47,232 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_3c196259-fd4e-4598-8000-7c51c1a250f0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-12-02 16:27:47,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:27:47,264 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:27:47,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47 WrapperNode [2023-12-02 16:27:47,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:27:47,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:27:47,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:27:47,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:27:47,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,303 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-12-02 16:27:47,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:27:47,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:27:47,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:27:47,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:27:47,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:27:47,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:27:47,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:27:47,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:27:47,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (1/1) ... [2023-12-02 16:27:47,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:27:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:47,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:27:47,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:27:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:27:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:27:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:27:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:27:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:27:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:27:47,474 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:27:47,476 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:27:47,628 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:27:47,663 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:27:47,663 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:27:47,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:47 BoogieIcfgContainer [2023-12-02 16:27:47,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:27:47,666 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:27:47,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:27:47,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:27:47,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:27:46" (1/3) ... [2023-12-02 16:27:47,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dfa3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:27:47, skipping insertion in model container [2023-12-02 16:27:47,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:27:47" (2/3) ... [2023-12-02 16:27:47,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dfa3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:27:47, skipping insertion in model container [2023-12-02 16:27:47,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:47" (3/3) ... [2023-12-02 16:27:47,673 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.factorial4even.c [2023-12-02 16:27:47,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:27:47,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:27:47,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:27:47,745 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;@2a8fc3b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:27:47,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:27:47,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:27:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:27:47,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:47,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:27:47,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:47,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1985682460, now seen corresponding path program 1 times [2023-12-02 16:27:47,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:47,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322433586] [2023-12-02 16:27:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:47,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:47,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:47,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:47,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 16:27:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:47,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:27:47,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:47,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:27:47,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322433586] [2023-12-02 16:27:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322433586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:47,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:47,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:27:47,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351531344] [2023-12-02 16:27:47,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:47,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:27:47,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:48,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:27:48,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:27:48,019 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:48,110 INFO L93 Difference]: Finished difference Result 35 states and 52 transitions. [2023-12-02 16:27:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:27:48,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 16:27:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:48,118 INFO L225 Difference]: With dead ends: 35 [2023-12-02 16:27:48,119 INFO L226 Difference]: Without dead ends: 22 [2023-12-02 16:27:48,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:27:48,125 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:48,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:27:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-02 16:27:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2023-12-02 16:27:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:27:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-12-02 16:27:48,157 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2023-12-02 16:27:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:48,157 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-12-02 16:27:48,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:27:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-12-02 16:27:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 16:27:48,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:48,159 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:48,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:48,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:48,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:48,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1243418234, now seen corresponding path program 1 times [2023-12-02 16:27:48,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:48,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945478922] [2023-12-02 16:27:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:48,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:48,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:48,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:48,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 16:27:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:48,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:27:48,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:27:48,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:27:48,524 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:48,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945478922] [2023-12-02 16:27:48,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945478922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:48,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:48,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:27:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745570111] [2023-12-02 16:27:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:48,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:27:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:27:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:27:48,528 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:27:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:48,616 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-12-02 16:27:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:27:48,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 16:27:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:48,618 INFO L225 Difference]: With dead ends: 30 [2023-12-02 16:27:48,618 INFO L226 Difference]: Without dead ends: 28 [2023-12-02 16:27:48,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:27:48,620 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:48,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:27:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-02 16:27:48,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-12-02 16:27:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:27:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-12-02 16:27:48,629 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2023-12-02 16:27:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:48,630 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-12-02 16:27:48,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:27:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-12-02 16:27:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 16:27:48,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:48,631 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:48,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 16:27:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:48,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:48,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash 126468606, now seen corresponding path program 1 times [2023-12-02 16:27:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364658494] [2023-12-02 16:27:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:48,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:48,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:48,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:48,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 16:27:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:48,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 16:27:48,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:27:49,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:27:49,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:49,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364658494] [2023-12-02 16:27:49,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364658494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [329910749] [2023-12-02 16:27:49,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:49,142 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:49,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:27:49,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:27:49,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-02 16:27:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:49,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:27:49,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:27:49,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:27:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [329910749] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421230789] [2023-12-02 16:27:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:49,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:49,392 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:49,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:27:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:49,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:27:49,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:27:49,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:27:49,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421230789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:49,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:27:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 9, 7] total 12 [2023-12-02 16:27:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621622154] [2023-12-02 16:27:49,647 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:27:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:27:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:27:49,649 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:27:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:49,915 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2023-12-02 16:27:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:27:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 19 [2023-12-02 16:27:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:49,917 INFO L225 Difference]: With dead ends: 46 [2023-12-02 16:27:49,917 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 16:27:49,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-02 16:27:49,919 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:49,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:27:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 16:27:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2023-12-02 16:27:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:27:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-12-02 16:27:49,932 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 19 [2023-12-02 16:27:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:49,933 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-12-02 16:27:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:27:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-12-02 16:27:49,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:27:49,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:49,934 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 16:27:49,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 16:27:50,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:27:50,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:50,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:50,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:50,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -667139364, now seen corresponding path program 2 times [2023-12-02 16:27:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:50,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150493308] [2023-12-02 16:27:50,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:27:50,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:50,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:50,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:50,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 16:27:50,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:27:50,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:50,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:27:50,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 16:27:50,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:50,855 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150493308] [2023-12-02 16:27:50,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150493308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380401052] [2023-12-02 16:27:50,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:27:50,856 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:50,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:27:50,861 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:27:50,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 16:27:50,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:27:50,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:50,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:27:50,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 16:27:51,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:51,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380401052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359645442] [2023-12-02 16:27:51,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:27:51,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:51,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:51,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:51,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:27:51,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:27:51,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:51,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 16:27:51,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:27:51,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:51,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359645442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:51,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:27:51,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 9 [2023-12-02 16:27:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440727430] [2023-12-02 16:27:51,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:27:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:27:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:27:51,439 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:27:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:51,614 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2023-12-02 16:27:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:27:51,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-12-02 16:27:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:51,617 INFO L225 Difference]: With dead ends: 47 [2023-12-02 16:27:51,617 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 16:27:51,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:27:51,619 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:51,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:27:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 16:27:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-02 16:27:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:27:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-12-02 16:27:51,642 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 25 [2023-12-02 16:27:51,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:51,642 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-12-02 16:27:51,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:27:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-12-02 16:27:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 16:27:51,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:51,644 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-02 16:27:51,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 16:27:51,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 16:27:52,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 16:27:52,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:52,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:52,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash -128401990, now seen corresponding path program 3 times [2023-12-02 16:27:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:52,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821252746] [2023-12-02 16:27:52,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:27:52,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:52,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:52,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 16:27:52,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 16:27:52,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:52,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 16:27:52,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 16:27:52,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:52,551 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:52,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821252746] [2023-12-02 16:27:52,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821252746] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:52,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [226044387] [2023-12-02 16:27:52,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:27:52,551 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:52,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:27:52,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:27:52,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 16:27:52,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 16:27:52,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:52,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 16:27:52,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 16:27:52,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [226044387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715248565] [2023-12-02 16:27:52,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:27:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:52,816 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:52,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 16:27:52,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 16:27:52,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:52,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 16:27:52,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 16:27:53,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:53,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715248565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:53,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:27:53,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 10] total 11 [2023-12-02 16:27:53,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120462836] [2023-12-02 16:27:53,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:27:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:27:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:27:53,086 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 16:27:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:53,699 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2023-12-02 16:27:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:27:53,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2023-12-02 16:27:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:53,700 INFO L225 Difference]: With dead ends: 51 [2023-12-02 16:27:53,700 INFO L226 Difference]: Without dead ends: 49 [2023-12-02 16:27:53,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-12-02 16:27:53,701 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:53,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 66 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:27:53,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-02 16:27:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-02 16:27:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:27:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2023-12-02 16:27:53,714 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 38 [2023-12-02 16:27:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:53,714 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2023-12-02 16:27:53,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 16:27:53,715 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2023-12-02 16:27:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:27:53,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:53,716 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2023-12-02 16:27:53,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 16:27:53,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:54,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 16:27:54,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:54,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:54,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:54,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1566127460, now seen corresponding path program 4 times [2023-12-02 16:27:54,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:54,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953366502] [2023-12-02 16:27:54,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:27:54,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:54,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:54,319 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:54,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 16:27:54,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:27:54,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:54,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 16:27:54,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 16:27:54,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 16:27:54,956 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:54,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953366502] [2023-12-02 16:27:54,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953366502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:54,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [82742554] [2023-12-02 16:27:54,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:27:54,957 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:54,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:27:54,958 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:27:54,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 16:27:55,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:27:55,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:55,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-02 16:27:55,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 16:27:55,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 16:27:55,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [82742554] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142516086] [2023-12-02 16:27:55,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:27:55,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:55,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:55,561 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:55,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:27:55,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:27:55,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:55,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 16:27:55,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-02 16:27:55,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 16:27:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142516086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:56,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:27:56,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11, 10, 12, 10] total 21 [2023-12-02 16:27:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893800713] [2023-12-02 16:27:56,037 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:56,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 16:27:56,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 16:27:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:27:56,040 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2023-12-02 16:27:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:56,693 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2023-12-02 16:27:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:27:56,693 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) Word has length 58 [2023-12-02 16:27:56,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:56,695 INFO L225 Difference]: With dead ends: 83 [2023-12-02 16:27:56,695 INFO L226 Difference]: Without dead ends: 81 [2023-12-02 16:27:56,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:27:56,696 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:56,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 110 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:27:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-02 16:27:56,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2023-12-02 16:27:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 16:27:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2023-12-02 16:27:56,719 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 58 [2023-12-02 16:27:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:56,719 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2023-12-02 16:27:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2023-12-02 16:27:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2023-12-02 16:27:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 16:27:56,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:56,723 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2023-12-02 16:27:56,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 16:27:56,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 16:27:57,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 16:27:57,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:57,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:57,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1234451202, now seen corresponding path program 5 times [2023-12-02 16:27:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886498685] [2023-12-02 16:27:57,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 16:27:57,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:57,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:57,326 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:57,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 16:27:57,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-02 16:27:57,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:57,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-02 16:27:57,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:27:58,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:27:58,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:58,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886498685] [2023-12-02 16:27:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886498685] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:58,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1438601468] [2023-12-02 16:27:58,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 16:27:58,845 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:58,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:27:58,846 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:27:58,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 16:27:59,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-02 16:27:59,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:27:59,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-02 16:27:59,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 41 proven. 244 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-02 16:27:59,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 41 proven. 244 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-02 16:28:00,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1438601468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:28:00,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219130054] [2023-12-02 16:28:00,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 16:28:00,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:28:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:28:00,036 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:28:00,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 16:28:00,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-02 16:28:00,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:28:00,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 16:28:00,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 41 proven. 244 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-02 16:28:00,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:28:00,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219130054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:28:00,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:28:00,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18, 17, 17, 15] total 31 [2023-12-02 16:28:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086253166] [2023-12-02 16:28:00,894 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:28:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 16:28:00,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:28:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 16:28:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:28:00,897 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 31 states, 28 states have (on average 2.607142857142857) internal successors, (73), 30 states have internal predecessors, (73), 21 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 18 states have call predecessors, (39), 20 states have call successors, (39) [2023-12-02 16:28:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:02,898 INFO L93 Difference]: Finished difference Result 142 states and 176 transitions. [2023-12-02 16:28:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 16:28:02,899 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.607142857142857) internal successors, (73), 30 states have internal predecessors, (73), 21 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 18 states have call predecessors, (39), 20 states have call successors, (39) Word has length 123 [2023-12-02 16:28:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:02,901 INFO L225 Difference]: With dead ends: 142 [2023-12-02 16:28:02,902 INFO L226 Difference]: Without dead ends: 140 [2023-12-02 16:28:02,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=551, Invalid=2311, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 16:28:02,904 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 80 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:02,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 310 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:28:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-02 16:28:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2023-12-02 16:28:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 88 states have internal predecessors, (88), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 16:28:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 170 transitions. [2023-12-02 16:28:02,954 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 170 transitions. Word has length 123 [2023-12-02 16:28:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:02,955 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 170 transitions. [2023-12-02 16:28:02,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.607142857142857) internal successors, (73), 30 states have internal predecessors, (73), 21 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 18 states have call predecessors, (39), 20 states have call successors, (39) [2023-12-02 16:28:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 170 transitions. [2023-12-02 16:28:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-02 16:28:02,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:02,960 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1] [2023-12-02 16:28:02,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-02 16:28:03,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 16:28:03,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 16:28:03,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:28:03,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:28:03,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1279796956, now seen corresponding path program 6 times [2023-12-02 16:28:03,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:28:03,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120472807] [2023-12-02 16:28:03,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 16:28:03,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:28:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:28:03,567 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:28:03,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 16:28:03,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-02 16:28:03,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-02 16:28:03,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:28:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:28:04,285 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 16:28:04,285 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:28:04,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:28:04,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 16:28:04,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:28:04,493 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2023-12-02 16:28:04,496 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:28:04,576 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,576 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,577 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,578 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,578 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:28:04 BoogieIcfgContainer [2023-12-02 16:28:04,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:28:04,609 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:28:04,609 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:28:04,609 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:28:04,609 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:27:47" (3/4) ... [2023-12-02 16:28:04,610 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 16:28:04,644 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,644 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,644 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,644 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,644 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,644 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,645 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 16:28:04,760 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:28:04,761 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:28:04,761 INFO L158 Benchmark]: Toolchain (without parser) took 17761.89ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 78.7MB in the beginning and 122.5MB in the end (delta: -43.8MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-12-02 16:28:04,761 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 47.4MB in the beginning and 47.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:28:04,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.84ms. Allocated memory is still 102.8MB. Free memory was 78.7MB in the beginning and 66.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 16:28:04,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.93ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 65.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:28:04,762 INFO L158 Benchmark]: Boogie Preprocessor took 29.17ms. Allocated memory is still 102.8MB. Free memory was 65.4MB in the beginning and 63.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:28:04,763 INFO L158 Benchmark]: RCFGBuilder took 329.60ms. Allocated memory is still 102.8MB. Free memory was 63.9MB in the beginning and 51.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 16:28:04,763 INFO L158 Benchmark]: TraceAbstraction took 16942.01ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 50.4MB in the beginning and 140.3MB in the end (delta: -89.9MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2023-12-02 16:28:04,764 INFO L158 Benchmark]: Witness Printer took 151.88ms. Allocated memory is still 180.4MB. Free memory was 140.3MB in the beginning and 122.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 16:28:04,766 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 47.4MB in the beginning and 47.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.84ms. Allocated memory is still 102.8MB. Free memory was 78.7MB in the beginning and 66.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.93ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 65.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.17ms. Allocated memory is still 102.8MB. Free memory was 65.4MB in the beginning and 63.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.60ms. Allocated memory is still 102.8MB. Free memory was 63.9MB in the beginning and 51.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16942.01ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 50.4MB in the beginning and 140.3MB in the end (delta: -89.9MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. * Witness Printer took 151.88ms. Allocated memory is still 180.4MB. Free memory was 140.3MB in the beginning and 122.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. 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 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L34] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L35] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L37] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 1); [L38] const SORT_12 msb_SORT_12 = (SORT_12)1 << (1 - 1); [L40] const SORT_1 var_2 = 1; [L41] const SORT_1 var_11 = mask_SORT_1; [L42] const SORT_1 var_16 = 3; [L45] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 init_5_arg_1 = var_2; [L49] state_3 = init_5_arg_1 [L50] SORT_1 init_6_arg_1 = var_2; [L51] state_4 = init_6_arg_1 VAL [init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_16=3, var_2=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_16=3, var_2=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_16=3, var_2=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, state_3=1, state_4=1, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=1, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=1, next_9_arg_1=2, state_3=1, state_4=2, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=2, var_7_arg_0=1, var_7_arg_1=1, var_8=1, var_8_arg_0=1, var_8_arg_1=1] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=2, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=1, var_15_arg_0=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=1, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=2, next_9_arg_1=3, state_3=2, state_4=3, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=3, var_7_arg_0=2, var_7_arg_1=1, var_8=2, var_8_arg_0=1, var_8_arg_1=2] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=3, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=2, var_15_arg_0=2, var_16=3, var_17=0, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=6, var_15_arg_0=6, var_16=3, var_17=1, var_17_arg_0=4, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=6, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=6, next_9_arg_1=4, state_3=6, state_4=4, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=6, var_15_arg_0=6, var_16=3, var_17=1, var_17_arg_0=4, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=6, var_2=1, var_7=4, var_7_arg_0=3, var_7_arg_1=1, var_8=6, var_8_arg_0=2, var_8_arg_1=3] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=24, next_9_arg_1=5, state_3=24, state_4=5, var_11=15, var_13=0, var_13_arg_0=4, var_13_arg_1=15, var_15=6, var_15_arg_0=6, var_16=3, var_17=1, var_17_arg_0=4, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=6, var_2=1, var_7=5, var_7_arg_0=4, var_7_arg_1=1, var_8=24, var_8_arg_0=6, var_8_arg_1=4] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=24, next_9_arg_1=5, state_3=24, state_4=5, var_11=15, var_13=0, var_13_arg_0=5, var_13_arg_1=15, var_15=6, var_15_arg_0=6, var_16=3, var_17=1, var_17_arg_0=4, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=6, var_2=1, var_7=5, var_7_arg_0=4, var_7_arg_1=1, var_8=24, var_8_arg_0=6, var_8_arg_1=4] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=24, next_9_arg_1=5, state_3=24, state_4=5, var_11=15, var_13=0, var_13_arg_0=5, var_13_arg_1=15, var_15=6, var_15_arg_0=6, var_16=3, var_17=1, var_17_arg_0=4, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=6, var_2=1, var_7=5, var_7_arg_0=4, var_7_arg_1=1, var_8=24, var_8_arg_0=6, var_8_arg_1=4] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=24, next_9_arg_1=5, state_3=24, state_4=5, var_11=15, var_13=0, var_13_arg_0=5, var_13_arg_1=15, var_15=24, var_15_arg_0=24, var_16=3, var_17=1, var_17_arg_0=5, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=24, var_2=1, var_7=5, var_7_arg_0=4, var_7_arg_1=1, var_8=24, var_8_arg_0=6, var_8_arg_1=4] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=24, next_9_arg_1=5, state_3=24, state_4=5, var_11=15, var_13=0, var_13_arg_0=5, var_13_arg_1=15, var_15=24, var_15_arg_0=24, var_16=3, var_17=1, var_17_arg_0=5, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=24, var_2=1, var_7=5, var_7_arg_0=4, var_7_arg_1=1, var_8=24, var_8_arg_0=6, var_8_arg_1=4] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=120, next_9_arg_1=6, state_3=120, state_4=6, var_11=15, var_13=0, var_13_arg_0=5, var_13_arg_1=15, var_15=24, var_15_arg_0=24, var_16=3, var_17=1, var_17_arg_0=5, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=24, var_2=1, var_7=6, var_7_arg_0=5, var_7_arg_1=1, var_8=120, var_8_arg_0=24, var_8_arg_1=5] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=120, next_9_arg_1=6, state_3=120, state_4=6, var_11=15, var_13=0, var_13_arg_0=6, var_13_arg_1=15, var_15=24, var_15_arg_0=24, var_16=3, var_17=1, var_17_arg_0=5, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=24, var_2=1, var_7=6, var_7_arg_0=5, var_7_arg_1=1, var_8=120, var_8_arg_0=24, var_8_arg_1=5] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=120, next_9_arg_1=6, state_3=120, state_4=6, var_11=15, var_13=0, var_13_arg_0=6, var_13_arg_1=15, var_15=24, var_15_arg_0=24, var_16=3, var_17=1, var_17_arg_0=5, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=24, var_2=1, var_7=6, var_7_arg_0=5, var_7_arg_1=1, var_8=120, var_8_arg_0=24, var_8_arg_1=5] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=120, next_9_arg_1=6, state_3=120, state_4=6, var_11=15, var_13=0, var_13_arg_0=6, var_13_arg_1=15, var_15=120, var_15_arg_0=120, var_16=3, var_17=1, var_17_arg_0=6, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=120, var_2=1, var_7=6, var_7_arg_0=5, var_7_arg_1=1, var_8=120, var_8_arg_0=24, var_8_arg_1=5] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=120, next_9_arg_1=6, state_3=120, state_4=6, var_11=15, var_13=0, var_13_arg_0=6, var_13_arg_1=15, var_15=120, var_15_arg_0=120, var_16=3, var_17=1, var_17_arg_0=6, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=120, var_2=1, var_7=6, var_7_arg_0=5, var_7_arg_1=1, var_8=120, var_8_arg_0=24, var_8_arg_1=5] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=208, next_9_arg_1=7, state_3=208, state_4=7, var_11=15, var_13=0, var_13_arg_0=6, var_13_arg_1=15, var_15=120, var_15_arg_0=120, var_16=3, var_17=1, var_17_arg_0=6, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=120, var_2=1, var_7=7, var_7_arg_0=6, var_7_arg_1=1, var_8=208, var_8_arg_0=120, var_8_arg_1=6] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=208, next_9_arg_1=7, state_3=208, state_4=7, var_11=15, var_13=0, var_13_arg_0=7, var_13_arg_1=15, var_15=120, var_15_arg_0=120, var_16=3, var_17=1, var_17_arg_0=6, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=120, var_2=1, var_7=7, var_7_arg_0=6, var_7_arg_1=1, var_8=208, var_8_arg_0=120, var_8_arg_1=6] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=208, next_9_arg_1=7, state_3=208, state_4=7, var_11=15, var_13=0, var_13_arg_0=7, var_13_arg_1=15, var_15=120, var_15_arg_0=120, var_16=3, var_17=1, var_17_arg_0=6, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=120, var_2=1, var_7=7, var_7_arg_0=6, var_7_arg_1=1, var_8=208, var_8_arg_0=120, var_8_arg_1=6] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=208, next_9_arg_1=7, state_3=208, state_4=7, var_11=15, var_13=0, var_13_arg_0=7, var_13_arg_1=15, var_15=208, var_15_arg_0=208, var_16=3, var_17=1, var_17_arg_0=7, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=208, var_2=1, var_7=7, var_7_arg_0=6, var_7_arg_1=1, var_8=208, var_8_arg_0=120, var_8_arg_1=6] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=208, next_9_arg_1=7, state_3=208, state_4=7, var_11=15, var_13=0, var_13_arg_0=7, var_13_arg_1=15, var_15=208, var_15_arg_0=208, var_16=3, var_17=1, var_17_arg_0=7, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=208, var_2=1, var_7=7, var_7_arg_0=6, var_7_arg_1=1, var_8=208, var_8_arg_0=120, var_8_arg_1=6] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=176, next_9_arg_1=8, state_3=176, state_4=8, var_11=15, var_13=0, var_13_arg_0=7, var_13_arg_1=15, var_15=208, var_15_arg_0=208, var_16=3, var_17=1, var_17_arg_0=7, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=208, var_2=1, var_7=8, var_7_arg_0=7, var_7_arg_1=1, var_8=176, var_8_arg_0=208, var_8_arg_1=7] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=176, next_9_arg_1=8, state_3=176, state_4=8, var_11=15, var_13=0, var_13_arg_0=8, var_13_arg_1=15, var_15=208, var_15_arg_0=208, var_16=3, var_17=1, var_17_arg_0=7, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=208, var_2=1, var_7=8, var_7_arg_0=7, var_7_arg_1=1, var_8=176, var_8_arg_0=208, var_8_arg_1=7] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=176, next_9_arg_1=8, state_3=176, state_4=8, var_11=15, var_13=0, var_13_arg_0=8, var_13_arg_1=15, var_15=208, var_15_arg_0=208, var_16=3, var_17=1, var_17_arg_0=7, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=208, var_2=1, var_7=8, var_7_arg_0=7, var_7_arg_1=1, var_8=176, var_8_arg_0=208, var_8_arg_1=7] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=176, next_9_arg_1=8, state_3=176, state_4=8, var_11=15, var_13=0, var_13_arg_0=8, var_13_arg_1=15, var_15=176, var_15_arg_0=176, var_16=3, var_17=1, var_17_arg_0=8, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=176, var_2=1, var_7=8, var_7_arg_0=7, var_7_arg_1=1, var_8=176, var_8_arg_0=208, var_8_arg_1=7] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=176, next_9_arg_1=8, state_3=176, state_4=8, var_11=15, var_13=0, var_13_arg_0=8, var_13_arg_1=15, var_15=176, var_15_arg_0=176, var_16=3, var_17=1, var_17_arg_0=8, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=176, var_2=1, var_7=8, var_7_arg_0=7, var_7_arg_1=1, var_8=176, var_8_arg_0=208, var_8_arg_1=7] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=9, state_3=128, state_4=9, var_11=15, var_13=0, var_13_arg_0=8, var_13_arg_1=15, var_15=176, var_15_arg_0=176, var_16=3, var_17=1, var_17_arg_0=8, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=176, var_2=1, var_7=9, var_7_arg_0=8, var_7_arg_1=1, var_8=128, var_8_arg_0=176, var_8_arg_1=8] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=9, state_3=128, state_4=9, var_11=15, var_13=0, var_13_arg_0=9, var_13_arg_1=15, var_15=176, var_15_arg_0=176, var_16=3, var_17=1, var_17_arg_0=8, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=176, var_2=1, var_7=9, var_7_arg_0=8, var_7_arg_1=1, var_8=128, var_8_arg_0=176, var_8_arg_1=8] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=9, state_3=128, state_4=9, var_11=15, var_13=0, var_13_arg_0=9, var_13_arg_1=15, var_15=176, var_15_arg_0=176, var_16=3, var_17=1, var_17_arg_0=8, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=176, var_2=1, var_7=9, var_7_arg_0=8, var_7_arg_1=1, var_8=128, var_8_arg_0=176, var_8_arg_1=8] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=9, state_3=128, state_4=9, var_11=15, var_13=0, var_13_arg_0=9, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=9, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=9, var_7_arg_0=8, var_7_arg_1=1, var_8=128, var_8_arg_0=176, var_8_arg_1=8] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=9, state_3=128, state_4=9, var_11=15, var_13=0, var_13_arg_0=9, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=9, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=9, var_7_arg_0=8, var_7_arg_1=1, var_8=128, var_8_arg_0=176, var_8_arg_1=8] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=10, state_3=128, state_4=10, var_11=15, var_13=0, var_13_arg_0=9, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=9, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=10, var_7_arg_0=9, var_7_arg_1=1, var_8=128, var_8_arg_0=128, var_8_arg_1=9] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=10, state_3=128, state_4=10, var_11=15, var_13=0, var_13_arg_0=10, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=9, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=10, var_7_arg_0=9, var_7_arg_1=1, var_8=128, var_8_arg_0=128, var_8_arg_1=9] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=10, state_3=128, state_4=10, var_11=15, var_13=0, var_13_arg_0=10, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=9, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=10, var_7_arg_0=9, var_7_arg_1=1, var_8=128, var_8_arg_0=128, var_8_arg_1=9] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=10, state_3=128, state_4=10, var_11=15, var_13=0, var_13_arg_0=10, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=10, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=10, var_7_arg_0=9, var_7_arg_1=1, var_8=128, var_8_arg_0=128, var_8_arg_1=9] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=128, next_9_arg_1=10, state_3=128, state_4=10, var_11=15, var_13=0, var_13_arg_0=10, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=10, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=10, var_7_arg_0=9, var_7_arg_1=1, var_8=128, var_8_arg_0=128, var_8_arg_1=9] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=11, state_3=0, state_4=11, var_11=15, var_13=0, var_13_arg_0=10, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=10, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=11, var_7_arg_0=10, var_7_arg_1=1, var_8=0, var_8_arg_0=128, var_8_arg_1=10] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=11, state_3=0, state_4=11, var_11=15, var_13=0, var_13_arg_0=11, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=10, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=11, var_7_arg_0=10, var_7_arg_1=1, var_8=0, var_8_arg_0=128, var_8_arg_1=10] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=11, state_3=0, state_4=11, var_11=15, var_13=0, var_13_arg_0=11, var_13_arg_1=15, var_15=128, var_15_arg_0=128, var_16=3, var_17=1, var_17_arg_0=10, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=128, var_2=1, var_7=11, var_7_arg_0=10, var_7_arg_1=1, var_8=0, var_8_arg_0=128, var_8_arg_1=10] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=11, state_3=0, state_4=11, var_11=15, var_13=0, var_13_arg_0=11, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=11, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=11, var_7_arg_0=10, var_7_arg_1=1, var_8=0, var_8_arg_0=128, var_8_arg_1=10] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=11, state_3=0, state_4=11, var_11=15, var_13=0, var_13_arg_0=11, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=11, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=11, var_7_arg_0=10, var_7_arg_1=1, var_8=0, var_8_arg_0=128, var_8_arg_1=10] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=12, state_3=0, state_4=12, var_11=15, var_13=0, var_13_arg_0=11, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=11, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=12, var_7_arg_0=11, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=11] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=12, state_3=0, state_4=12, var_11=15, var_13=0, var_13_arg_0=12, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=11, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=12, var_7_arg_0=11, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=11] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=12, state_3=0, state_4=12, var_11=15, var_13=0, var_13_arg_0=12, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=11, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=12, var_7_arg_0=11, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=11] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=12, state_3=0, state_4=12, var_11=15, var_13=0, var_13_arg_0=12, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=12, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=12, var_7_arg_0=11, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=11] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=12, state_3=0, state_4=12, var_11=15, var_13=0, var_13_arg_0=12, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=12, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=12, var_7_arg_0=11, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=11] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=13, state_3=0, state_4=13, var_11=15, var_13=0, var_13_arg_0=12, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=12, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=13, var_7_arg_0=12, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=12] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=13, state_3=0, state_4=13, var_11=15, var_13=0, var_13_arg_0=13, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=12, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=13, var_7_arg_0=12, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=12] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=13, state_3=0, state_4=13, var_11=15, var_13=0, var_13_arg_0=13, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=12, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=13, var_7_arg_0=12, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=12] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=13, state_3=0, state_4=13, var_11=15, var_13=0, var_13_arg_0=13, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=13, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=13, var_7_arg_0=12, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=12] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=13, state_3=0, state_4=13, var_11=15, var_13=0, var_13_arg_0=13, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=13, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=13, var_7_arg_0=12, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=12] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=14, state_3=0, state_4=14, var_11=15, var_13=0, var_13_arg_0=13, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=13, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=14, var_7_arg_0=13, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=13] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=14, state_3=0, state_4=14, var_11=15, var_13=0, var_13_arg_0=14, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=13, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=14, var_7_arg_0=13, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=13] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L60] RET __VERIFIER_assert(!(bad_14_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=14, state_3=0, state_4=14, var_11=15, var_13=0, var_13_arg_0=14, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=13, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=14, var_7_arg_0=13, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=13] [L61] SORT_1 var_17_arg_0 = state_4; [L62] SORT_1 var_17_arg_1 = var_16; [L63] SORT_12 var_17 = var_17_arg_0 > var_17_arg_1; [L64] SORT_1 var_15_arg_0 = state_3; [L65] SORT_12 var_15 = var_15_arg_0 >> 0; [L66] SORT_12 var_18_arg_0 = var_17; [L67] SORT_12 var_18_arg_1 = var_15; [L68] SORT_12 var_18 = var_18_arg_0 & var_18_arg_1; [L69] var_18 = var_18 & mask_SORT_12 [L70] SORT_12 bad_19_arg_0 = var_18; VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=14, state_3=0, state_4=14, var_11=15, var_13=0, var_13_arg_0=14, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=14, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=14, var_7_arg_0=13, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=13] [L71] CALL __VERIFIER_assert(!(bad_19_arg_0)) VAL [\old(cond)=1] [L29] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_19_arg_0)) VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=14, state_3=0, state_4=14, var_11=15, var_13=0, var_13_arg_0=14, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=14, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=14, var_7_arg_0=13, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=13] [L73] SORT_1 var_7_arg_0 = state_4; [L74] SORT_1 var_7_arg_1 = var_2; [L75] SORT_1 var_7 = var_7_arg_0 + var_7_arg_1; [L76] var_7 = var_7 & mask_SORT_1 [L77] SORT_1 next_9_arg_1 = var_7; [L78] SORT_1 var_8_arg_0 = state_3; [L79] SORT_1 var_8_arg_1 = state_4; [L80] SORT_1 var_8 = var_8_arg_0 * var_8_arg_1; [L81] SORT_1 next_10_arg_1 = var_8; [L83] state_4 = next_9_arg_1 [L84] state_3 = next_10_arg_1 VAL [bad_14_arg_0=0, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=15, state_3=0, state_4=15, var_11=15, var_13=0, var_13_arg_0=14, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=14, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=15, var_7_arg_0=14, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=14] [L56] SORT_1 var_13_arg_0 = state_4; [L57] SORT_1 var_13_arg_1 = var_11; [L58] SORT_12 var_13 = var_13_arg_0 == var_13_arg_1; [L59] SORT_12 bad_14_arg_0 = var_13; VAL [bad_14_arg_0=1, bad_19_arg_0=0, init_5_arg_1=1, init_6_arg_1=1, mask_SORT_12=1, mask_SORT_1=15, msb_SORT_12=1, msb_SORT_1=8, next_10_arg_1=0, next_9_arg_1=15, state_3=0, state_4=15, var_11=15, var_13=1, var_13_arg_0=15, var_13_arg_1=15, var_15=0, var_15_arg_0=0, var_16=3, var_17=1, var_17_arg_0=14, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=0, var_2=1, var_7=15, var_7_arg_0=14, var_7_arg_1=1, var_8=0, var_8_arg_0=0, var_8_arg_1=14] [L60] CALL __VERIFIER_assert(!(bad_14_arg_0)) VAL [\old(cond)=0] [L29] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L29] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.8s, OverallIterations: 8, TraceHistogramMax: 29, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 208 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 203 mSDsluCounter, 652 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 573 mSDsCounter, 141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1502 IncrementalHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 141 mSolverCounterUnsat, 79 mSDtfsCounter, 1502 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1470 GetRequests, 1327 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=7, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 995 NumberOfCodeBlocks, 977 NumberOfCodeBlocksAsserted, 90 NumberOfCheckSat, 1381 ConstructedInterpolants, 28 QuantifiedInterpolants, 14564 SizeOfPredicates, 414 NumberOfNonLiveVariables, 2512 ConjunctsInSsa, 507 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 4738/6389 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 proved your program to be incorrect! [2023-12-02 16:28:04,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c196259-fd4e-4598-8000-7c51c1a250f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE