./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX --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 be98390aa39eb4015bb82c52f3543b0d6ba9e6d709277c1c8e88d4773e2b528c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:14:46,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:46,424 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:14:46,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:46,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:46,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:46,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:46,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:46,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:46,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:46,473 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:46,474 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:46,474 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:46,475 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:14:46,476 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:46,476 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:46,477 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:14:46,478 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:14:46,478 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:46,479 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:14:46,480 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:14:46,480 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:14:46,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:46,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:14:46,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:14:46,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:46,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:14:46,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:46,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:14:46,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:14:46,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:46,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:46,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:46,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:46,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:46,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:46,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:14:46,488 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:14:46,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:14:46,489 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:14:46,489 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:46,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:46,490 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_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be98390aa39eb4015bb82c52f3543b0d6ba9e6d709277c1c8e88d4773e2b528c [2023-11-12 00:14:46,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:46,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:46,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:46,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:46,871 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:46,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c [2023-11-12 00:14:49,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:50,177 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:50,177 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c [2023-11-12 00:14:50,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data/0bb26ebb8/7d7694bad5974eeb83ebf13d40415c58/FLAG9cb611965 [2023-11-12 00:14:50,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data/0bb26ebb8/7d7694bad5974eeb83ebf13d40415c58 [2023-11-12 00:14:50,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:50,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:50,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:50,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:50,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:50,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:50,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f34826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50, skipping insertion in model container [2023-11-12 00:14:50,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:50,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:50,496 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_1d3220c2-aca8-4b34-95a0-df41931339ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c[1266,1279] [2023-11-12 00:14:50,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:50,685 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:14:50,700 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_1d3220c2-aca8-4b34-95a0-df41931339ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c[1266,1279] [2023-11-12 00:14:50,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:50,792 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:14:50,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50 WrapperNode [2023-11-12 00:14:50,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:50,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:50,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:14:50,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:14:50,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:50,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:50,933 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 843 [2023-11-12 00:14:50,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:50,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:14:50,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:14:50,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:14:50,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:50,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:50,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:50,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:51,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:51,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:51,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:51,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:51,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:14:51,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:14:51,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:14:51,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:14:51,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (1/1) ... [2023-11-12 00:14:51,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:51,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:51,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:14:51,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:14:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:14:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:14:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:14:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:14:51,464 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:14:51,466 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:14:52,424 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:14:53,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:14:53,529 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:14:53,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:53 BoogieIcfgContainer [2023-11-12 00:14:53,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:14:53,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:14:53,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:14:53,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:14:53,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:50" (1/3) ... [2023-11-12 00:14:53,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49afe008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:53, skipping insertion in model container [2023-11-12 00:14:53,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:50" (2/3) ... [2023-11-12 00:14:53,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49afe008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:53, skipping insertion in model container [2023-11-12 00:14:53,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:53" (3/3) ... [2023-11-12 00:14:53,542 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c [2023-11-12 00:14:53,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:14:53,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:14:53,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:14:53,623 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;@6f7c4fb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:14:53,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:14:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:14:53,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:53,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:14:53,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:53,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash 19090291, now seen corresponding path program 1 times [2023-11-12 00:14:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:53,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77658731] [2023-11-12 00:14:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:53,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:14:54,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:14:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:14:54,268 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:14:54,270 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:14:54,271 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:14:54,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:14:54,279 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:14:54,283 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:14:54,309 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-12 00:14:54,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:14:54 BoogieIcfgContainer [2023-11-12 00:14:54,339 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:14:54,340 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:14:54,340 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:14:54,341 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:14:54,341 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:53" (3/4) ... [2023-11-12 00:14:54,344 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:14:54,345 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:14:54,349 INFO L158 Benchmark]: Toolchain (without parser) took 4131.95ms. Allocated memory was 161.5MB in the beginning and 201.3MB in the end (delta: 39.8MB). Free memory was 130.7MB in the beginning and 78.8MB in the end (delta: 51.9MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2023-11-12 00:14:54,350 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 119.5MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:14:54,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.68ms. Allocated memory is still 161.5MB. Free memory was 129.9MB in the beginning and 108.2MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 00:14:54,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 140.31ms. Allocated memory is still 161.5MB. Free memory was 108.2MB in the beginning and 93.4MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:14:54,353 INFO L158 Benchmark]: Boogie Preprocessor took 165.68ms. Allocated memory is still 161.5MB. Free memory was 93.4MB in the beginning and 88.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:14:54,354 INFO L158 Benchmark]: RCFGBuilder took 2431.73ms. Allocated memory was 161.5MB in the beginning and 201.3MB in the end (delta: 39.8MB). Free memory was 88.0MB in the beginning and 122.8MB in the end (delta: -34.8MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. [2023-11-12 00:14:54,355 INFO L158 Benchmark]: TraceAbstraction took 804.60ms. Allocated memory is still 201.3MB. Free memory was 122.8MB in the beginning and 79.8MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-12 00:14:54,356 INFO L158 Benchmark]: Witness Printer took 7.70ms. Allocated memory is still 201.3MB. Free memory was 79.8MB in the beginning and 78.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:14:54,362 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 119.5MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.68ms. Allocated memory is still 161.5MB. Free memory was 129.9MB in the beginning and 108.2MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 140.31ms. Allocated memory is still 161.5MB. Free memory was 108.2MB in the beginning and 93.4MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 165.68ms. Allocated memory is still 161.5MB. Free memory was 93.4MB in the beginning and 88.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2431.73ms. Allocated memory was 161.5MB in the beginning and 201.3MB in the end (delta: 39.8MB). Free memory was 88.0MB in the beginning and 122.8MB in the end (delta: -34.8MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. * TraceAbstraction took 804.60ms. Allocated memory is still 201.3MB. Free memory was 122.8MB in the beginning and 79.8MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 7.70ms. Allocated memory is still 201.3MB. Free memory was 79.8MB in the beginning and 78.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 168, overapproximation of bitwiseAnd at line 155. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L32] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L33] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L35] const SORT_31 mask_SORT_31 = (SORT_31)-1 >> (sizeof(SORT_31) * 8 - 4); [L36] const SORT_31 msb_SORT_31 = (SORT_31)1 << (4 - 1); [L38] const SORT_67 mask_SORT_67 = (SORT_67)-1 >> (sizeof(SORT_67) * 8 - 10); [L39] const SORT_67 msb_SORT_67 = (SORT_67)1 << (10 - 1); [L41] const SORT_1 var_7 = 0; [L42] const SORT_10 var_12 = 0; [L43] const SORT_1 var_21 = 1; [L44] const SORT_67 var_68 = 0; [L45] const SORT_10 var_122 = 104; [L46] const SORT_10 var_145 = 1; [L48] SORT_1 input_2; [L49] SORT_3 input_4; [L50] SORT_1 input_5; [L51] SORT_1 input_6; [L52] SORT_1 input_29; [L53] SORT_31 input_32; [L54] SORT_31 input_34; [L55] SORT_1 input_36; [L56] SORT_1 input_42; [L57] SORT_1 input_44; [L58] SORT_1 input_46; [L59] SORT_3 input_50; [L60] SORT_1 input_53; [L61] SORT_1 input_63; [L62] SORT_1 input_73; [L63] SORT_1 input_79; [L64] SORT_1 input_80; [L65] SORT_1 input_91; [L66] SORT_1 input_98; [L67] SORT_1 input_104; [L68] SORT_1 input_110; [L69] SORT_1 input_116; [L70] SORT_1 input_117; [L71] SORT_1 input_118; [L72] SORT_1 input_135; [L73] SORT_67 input_143; [L74] SORT_1 input_152; [L75] SORT_1 input_153; [L76] SORT_1 input_154; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L78] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L79] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L80] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L81] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L82] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L83] SORT_1 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L84] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L85] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L86] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L87] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L88] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L89] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] EXPR __VERIFIER_nondet_ushort() & mask_SORT_67 [L90] SORT_67 state_69 = __VERIFIER_nondet_ushort() & mask_SORT_67; [L91] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L91] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 init_9_arg_1 = var_7; [L94] state_8 = init_9_arg_1 [L95] SORT_1 init_15_arg_1 = var_7; [L96] state_14 = init_15_arg_1 [L97] SORT_1 init_26_arg_1 = var_7; [L98] state_25 = init_26_arg_1 [L99] SORT_1 init_28_arg_1 = var_7; [L100] state_27 = init_28_arg_1 [L101] SORT_1 init_39_arg_1 = var_7; [L102] state_38 = init_39_arg_1 [L103] SORT_1 init_41_arg_1 = var_7; [L104] state_40 = init_41_arg_1 [L105] SORT_1 init_49_arg_1 = var_21; [L106] state_48 = init_49_arg_1 [L107] SORT_1 init_56_arg_1 = var_7; [L108] state_55 = init_56_arg_1 [L109] SORT_1 init_58_arg_1 = var_7; [L110] state_57 = init_58_arg_1 [L111] SORT_1 init_60_arg_1 = var_7; [L112] state_59 = init_60_arg_1 [L113] SORT_1 init_62_arg_1 = var_7; [L114] state_61 = init_62_arg_1 [L115] SORT_1 init_66_arg_1 = var_7; [L116] state_65 = init_66_arg_1 [L117] SORT_67 init_70_arg_1 = var_68; [L118] state_69 = init_70_arg_1 [L119] SORT_1 init_72_arg_1 = var_7; [L120] state_71 = init_72_arg_1 VAL [init_15_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_39_arg_1=0, init_41_arg_1=0, init_49_arg_1=1, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_66_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_9_arg_1=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_31=15, mask_SORT_3=255, mask_SORT_67=1023, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_31=8, msb_SORT_3=128, msb_SORT_67=512, state_14=0, state_25=0, state_27=0, state_38=0, state_40=0, state_48=1, state_55=0, state_57=0, state_59=0, state_61=0, state_65=0, state_69=0, state_71=0, state_8=0, var_122=104, var_12=0, var_145=1, var_21=1, var_68=0, var_7=0] [L123] input_2 = __VERIFIER_nondet_uchar() [L124] input_4 = __VERIFIER_nondet_uchar() [L125] input_5 = __VERIFIER_nondet_uchar() [L126] input_6 = __VERIFIER_nondet_uchar() [L127] input_29 = __VERIFIER_nondet_uchar() [L128] input_32 = __VERIFIER_nondet_uchar() [L129] input_34 = __VERIFIER_nondet_uchar() [L130] input_36 = __VERIFIER_nondet_uchar() [L131] input_42 = __VERIFIER_nondet_uchar() [L132] input_44 = __VERIFIER_nondet_uchar() [L133] input_46 = __VERIFIER_nondet_uchar() [L134] input_50 = __VERIFIER_nondet_uchar() [L135] input_53 = __VERIFIER_nondet_uchar() [L136] input_63 = __VERIFIER_nondet_uchar() [L137] input_73 = __VERIFIER_nondet_uchar() [L138] input_79 = __VERIFIER_nondet_uchar() [L139] input_80 = __VERIFIER_nondet_uchar() [L140] input_91 = __VERIFIER_nondet_uchar() [L141] input_98 = __VERIFIER_nondet_uchar() [L142] input_104 = __VERIFIER_nondet_uchar() [L143] input_110 = __VERIFIER_nondet_uchar() [L144] input_116 = __VERIFIER_nondet_uchar() [L145] input_117 = __VERIFIER_nondet_uchar() [L146] input_118 = __VERIFIER_nondet_uchar() [L147] input_135 = __VERIFIER_nondet_uchar() [L148] input_143 = __VERIFIER_nondet_ushort() [L149] input_152 = __VERIFIER_nondet_uchar() [L150] input_153 = __VERIFIER_nondet_uchar() [L151] input_154 = __VERIFIER_nondet_uchar() [L154] SORT_1 var_11_arg_0 = state_8; [L155] EXPR var_11_arg_0 & mask_SORT_1 [L155] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L156] SORT_10 var_11 = var_11_arg_0; [L157] SORT_10 var_13_arg_0 = var_11; [L158] SORT_10 var_13_arg_1 = var_12; [L159] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L160] SORT_1 var_16_arg_0 = state_14; [L161] EXPR var_16_arg_0 & mask_SORT_1 [L161] var_16_arg_0 = var_16_arg_0 & mask_SORT_1 [L162] SORT_10 var_16 = var_16_arg_0; [L163] SORT_10 var_17_arg_0 = var_16; [L164] SORT_10 var_17_arg_1 = var_12; [L165] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L166] SORT_1 var_18_arg_0 = var_13; [L167] SORT_1 var_18_arg_1 = var_17; [L168] EXPR var_18_arg_0 | var_18_arg_1 [L168] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L169] SORT_1 var_22_arg_0 = var_18; [L170] SORT_1 var_22 = ~var_22_arg_0; [L171] SORT_1 var_23_arg_0 = var_21; [L172] SORT_1 var_23_arg_1 = var_22; [L173] EXPR var_23_arg_0 & var_23_arg_1 [L173] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L174] EXPR var_23 & mask_SORT_1 [L174] var_23 = var_23 & mask_SORT_1 [L175] SORT_1 bad_24_arg_0 = var_23; [L176] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:14:54,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX --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 be98390aa39eb4015bb82c52f3543b0d6ba9e6d709277c1c8e88d4773e2b528c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:14:57,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:57,269 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-12 00:14:57,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:57,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:57,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:57,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:57,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:57,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:57,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:57,342 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:57,343 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:57,343 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:57,345 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:57,346 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:57,346 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:57,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:57,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:14:57,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:57,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:14:57,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:57,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:14:57,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:14:57,352 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:14:57,352 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:14:57,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:14:57,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:57,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:57,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:14:57,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:57,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:57,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:57,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:57,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:14:57,358 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:14:57,358 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:14:57,358 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:14:57,358 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:57,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:57,360 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_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be98390aa39eb4015bb82c52f3543b0d6ba9e6d709277c1c8e88d4773e2b528c [2023-11-12 00:14:57,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:57,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:57,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:57,823 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:57,823 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:57,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c [2023-11-12 00:15:00,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:15:01,331 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:15:01,331 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c [2023-11-12 00:15:01,347 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data/58fb20377/6f693ed390a1402b9ffcfe31cf04e4de/FLAG9f0b43756 [2023-11-12 00:15:01,366 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/data/58fb20377/6f693ed390a1402b9ffcfe31cf04e4de [2023-11-12 00:15:01,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:15:01,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:15:01,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:01,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:15:01,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:15:01,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:01,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dceed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01, skipping insertion in model container [2023-11-12 00:15:01,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:01,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:15:01,670 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_1d3220c2-aca8-4b34-95a0-df41931339ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c[1266,1279] [2023-11-12 00:15:01,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:01,866 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:15:01,878 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_1d3220c2-aca8-4b34-95a0-df41931339ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c[1266,1279] [2023-11-12 00:15:01,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:01,957 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:15:01,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01 WrapperNode [2023-11-12 00:15:01,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:01,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:01,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:15:01,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:15:01,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:01,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,053 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 503 [2023-11-12 00:15:02,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:02,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:15:02,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:15:02,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:15:02,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:15:02,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:15:02,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:15:02,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:15:02,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (1/1) ... [2023-11-12 00:15:02,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:02,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:02,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:15:02,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:15:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:15:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:15:02,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:15:02,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:15:02,413 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:15:02,416 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:03,022 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:03,029 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:03,029 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:15:03,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:03 BoogieIcfgContainer [2023-11-12 00:15:03,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:03,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:03,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:03,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:03,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:15:01" (1/3) ... [2023-11-12 00:15:03,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeb1f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:03, skipping insertion in model container [2023-11-12 00:15:03,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:01" (2/3) ... [2023-11-12 00:15:03,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeb1f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:03, skipping insertion in model container [2023-11-12 00:15:03,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:03" (3/3) ... [2023-11-12 00:15:03,046 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p11.c [2023-11-12 00:15:03,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:03,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:15:03,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:03,137 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;@b047f24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:03,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:15:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:15:03,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:03,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:15:03,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:03,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-12 00:15:03,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:03,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21767785] [2023-11-12 00:15:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:03,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:15:03,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:03,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:15:03,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 00:15:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:03,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 00:15:03,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:03,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:03,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21767785] [2023-11-12 00:15:03,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21767785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:03,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:03,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:15:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462985186] [2023-11-12 00:15:03,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:03,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:15:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:03,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:15:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:15:03,780 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:03,872 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-12 00:15:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:15:03,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:15:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:03,885 INFO L225 Difference]: With dead ends: 19 [2023-11-12 00:15:03,886 INFO L226 Difference]: Without dead ends: 10 [2023-11-12 00:15:03,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:15:03,894 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:03,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:15:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-12 00:15:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-12 00:15:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-12 00:15:03,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-12 00:15:03,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:03,930 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-12 00:15:03,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-12 00:15:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:15:03,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:03,932 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:03,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:15:04,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:15:04,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:04,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-12 00:15:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:04,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437543715] [2023-11-12 00:15:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:04,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:15:04,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:04,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:15:04,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 00:15:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:04,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 00:15:04,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:04,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:05,985 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437543715] [2023-11-12 00:15:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437543715] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [553433481] [2023-11-12 00:15:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:05,987 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:15:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:15:05,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:15:05,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-12 00:15:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:06,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-12 00:15:06,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:06,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [553433481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046750976] [2023-11-12 00:15:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:07,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:07,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:07,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:07,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:15:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:07,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-12 00:15:07,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:08,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046750976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:09,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:15:09,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2023-11-12 00:15:09,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122998056] [2023-11-12 00:15:09,088 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:15:09,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:15:09,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:15:09,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:15:09,091 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:09,353 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-12 00:15:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:15:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:15:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:09,355 INFO L225 Difference]: With dead ends: 15 [2023-11-12 00:15:09,355 INFO L226 Difference]: Without dead ends: 13 [2023-11-12 00:15:09,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:15:09,357 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:09,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:15:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-12 00:15:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-12 00:15:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-12 00:15:09,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-12 00:15:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:09,362 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-12 00:15:09,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-12 00:15:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:15:09,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:09,364 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 00:15:09,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:09,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:09,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-12 00:15:09,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:09,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:09,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-12 00:15:09,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429272309] [2023-11-12 00:15:09,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:15:09,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:15:09,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:09,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:15:09,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 00:15:10,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 00:15:10,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:15:10,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-12 00:15:10,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:10,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:15,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429272309] [2023-11-12 00:15:15,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429272309] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:15,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [127735150] [2023-11-12 00:15:15,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:15:15,599 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:15:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:15:15,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:15:15,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-12 00:15:16,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 00:15:16,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:15:16,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-12 00:15:16,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:16,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [127735150] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082565672] [2023-11-12 00:15:24,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:15:24,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:24,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:24,329 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:24,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:15:24,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 00:15:24,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:15:24,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-12 00:15:24,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:24,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082565672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:28,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:15:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 19 [2023-11-12 00:15:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721663618] [2023-11-12 00:15:28,836 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:15:28,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 00:15:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 00:15:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:15:28,839 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:29,255 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2023-11-12 00:15:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:15:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:15:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:29,256 INFO L225 Difference]: With dead ends: 18 [2023-11-12 00:15:29,257 INFO L226 Difference]: Without dead ends: 16 [2023-11-12 00:15:29,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-11-12 00:15:29,259 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:29,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:15:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-12 00:15:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2023-11-12 00:15:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-12 00:15:29,272 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2023-11-12 00:15:29,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:29,273 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-12 00:15:29,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:29,273 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-12 00:15:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:15:29,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:29,274 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2023-11-12 00:15:29,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:29,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:29,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-12 00:15:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:29,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:29,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2023-11-12 00:15:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:29,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593869656] [2023-11-12 00:15:29,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:15:29,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:15:29,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:29,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:15:29,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 00:15:30,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 00:15:30,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:15:30,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-12 00:15:30,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:15:30,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:15:34,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:34,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593869656] [2023-11-12 00:15:34,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593869656] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:34,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [617637612] [2023-11-12 00:15:34,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:15:34,187 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:15:34,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:15:34,188 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:15:34,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-12 00:15:34,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 00:15:34,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:15:34,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-12 00:15:34,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:15:35,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:15:38,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [617637612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:38,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140107310] [2023-11-12 00:15:38,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:15:38,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:38,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:38,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:38,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3220c2-aca8-4b34-95a0-df41931339ea/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 00:15:38,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 00:15:38,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:15:38,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-12 00:15:38,931 INFO L285 TraceCheckSpWp]: Computing forward predicates...