./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 32bit --witnessprinter.graph.data.programhash edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:12:10,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:12:10,731 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:12:10,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:12:10,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:12:10,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:12:10,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:12:10,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:12:10,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:12:10,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:12:10,793 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:12:10,794 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:12:10,794 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:12:10,796 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:12:10,796 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:12:10,797 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:12:10,797 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:12:10,797 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:12:10,798 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:12:10,798 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:12:10,799 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:12:10,799 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:12:10,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:12:10,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:12:10,801 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:12:10,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:12:10,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:12:10,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:12:10,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:12:10,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:12:10,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:12:10,805 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:12:10,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:12:10,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:12:10,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:12:10,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:12:10,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:10,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:12:10,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:12:10,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:12:10,807 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:12:10,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:12:10,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:12:10,808 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:12:10,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:12:10,809 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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda [2023-11-12 00:12:11,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:12:11,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:12:11,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:12:11,169 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:12:11,169 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:12:11,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-12 00:12:14,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:12:14,628 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:12:14,628 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-12 00:12:14,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data/9685e32b4/3b3932da3f6f48fc8340b4f0d92178d4/FLAG299954ddf [2023-11-12 00:12:14,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data/9685e32b4/3b3932da3f6f48fc8340b4f0d92178d4 [2023-11-12 00:12:14,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:12:14,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:12:14,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:14,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:12:14,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:12:14,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:14,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1da840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14, skipping insertion in model container [2023-11-12 00:12:14,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:14,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:14,896 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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-12 00:12:14,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:14,939 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:12:14,951 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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-12 00:12:14,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:14,985 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:12:14,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14 WrapperNode [2023-11-12 00:12:14,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:14,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:14,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:12:14,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:12:14,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,042 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 81 [2023-11-12 00:12:15,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:15,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:12:15,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:12:15,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:12:15,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:12:15,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:12:15,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:12:15,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:12:15,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (1/1) ... [2023-11-12 00:12:15,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:15,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:15,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:12:15,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:12:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:12:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:12:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:12:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:12:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:12:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:12:15,281 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:12:15,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:12:15,532 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:12:15,639 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:12:15,639 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:12:15,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:15 BoogieIcfgContainer [2023-11-12 00:12:15,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:12:15,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:12:15,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:12:15,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:12:15,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:12:14" (1/3) ... [2023-11-12 00:12:15,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc2f745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:15, skipping insertion in model container [2023-11-12 00:12:15,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:14" (2/3) ... [2023-11-12 00:12:15,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc2f745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:15, skipping insertion in model container [2023-11-12 00:12:15,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:15" (3/3) ... [2023-11-12 00:12:15,662 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-62.i [2023-11-12 00:12:15,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:12:15,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:12:15,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:12:15,748 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;@3186dde6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:12:15,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:12:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:12:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 00:12:15,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:15,762 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:12:15,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:15,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:15,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1257204277, now seen corresponding path program 1 times [2023-11-12 00:12:15,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:15,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456227727] [2023-11-12 00:12:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:15,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:12:16,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:12:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:12:16,258 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:12:16,265 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:12:16,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:12:16,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:12:16,278 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:12:16,285 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:12:16,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:12:16 BoogieIcfgContainer [2023-11-12 00:12:16,376 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:12:16,379 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:12:16,379 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:12:16,380 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:12:16,381 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:15" (3/4) ... [2023-11-12 00:12:16,385 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:12:16,387 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:12:16,389 INFO L158 Benchmark]: Toolchain (without parser) took 1729.44ms. Allocated memory is still 176.2MB. Free memory was 146.2MB in the beginning and 93.0MB in the end (delta: 53.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-12 00:12:16,389 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:12:16,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.84ms. Allocated memory is still 176.2MB. Free memory was 146.2MB in the beginning and 134.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:12:16,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.73ms. Allocated memory is still 176.2MB. Free memory was 134.3MB in the beginning and 132.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:12:16,393 INFO L158 Benchmark]: Boogie Preprocessor took 38.67ms. Allocated memory is still 176.2MB. Free memory was 132.9MB in the beginning and 131.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:12:16,399 INFO L158 Benchmark]: RCFGBuilder took 559.05ms. Allocated memory is still 176.2MB. Free memory was 131.5MB in the beginning and 114.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:12:16,400 INFO L158 Benchmark]: TraceAbstraction took 726.60ms. Allocated memory is still 176.2MB. Free memory was 114.0MB in the beginning and 93.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 00:12:16,402 INFO L158 Benchmark]: Witness Printer took 8.24ms. Allocated memory is still 176.2MB. Free memory was 93.0MB in the beginning and 93.0MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:12:16,412 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 117.4MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.84ms. Allocated memory is still 176.2MB. Free memory was 146.2MB in the beginning and 134.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.73ms. Allocated memory is still 176.2MB. Free memory was 134.3MB in the beginning and 132.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.67ms. Allocated memory is still 176.2MB. Free memory was 132.9MB in the beginning and 131.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 559.05ms. Allocated memory is still 176.2MB. Free memory was 131.5MB in the beginning and 114.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 726.60ms. Allocated memory is still 176.2MB. Free memory was 114.0MB in the beginning and 93.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 8.24ms. Allocated memory is still 176.2MB. Free memory was 93.0MB in the beginning and 93.0MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 31.95; [L23] unsigned char var_1_2 = 0; [L24] double var_1_3 = 255.6; [L25] double var_1_4 = 50.8; [L26] double var_1_5 = 4.4; [L27] double var_1_6 = 100.8; [L28] unsigned char var_1_7 = 50; [L29] signed long int var_1_8 = 256; [L30] unsigned char var_1_9 = 25; [L70] isInitial = 1 [L71] FCALL initially() [L72] COND TRUE 1 [L73] FCALL updateLastVariables() [L74] CALL updateVariables() [L45] var_1_2 = __VERIFIER_nondet_uchar() [L46] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L46] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_1=639/20, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L47] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L48] var_1_3 = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not((var_1_3 >= -461168.6018427382800e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 4611686.018427382800e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not((var_1_3 >= -461168.6018427382800e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 4611686.018427382800e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L50] var_1_4 = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L51] RET assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L52] var_1_5 = __VERIFIER_nondet_double() [L53] CALL assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L53] RET assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L54] var_1_6 = __VERIFIER_nondet_double() [L55] CALL assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=256, var_1_9=25] [L56] var_1_8 = __VERIFIER_nondet_long() [L57] CALL assume_abort_if_not(var_1_8 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L20] COND FALSE !(!cond) [L57] RET assume_abort_if_not(var_1_8 >= -2147483648) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L58] CALL assume_abort_if_not(var_1_8 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_8 <= 2147483647) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L59] var_1_9 = __VERIFIER_nondet_uchar() [L60] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L61] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L74] RET updateVariables() [L75] CALL step() [L34] COND FALSE !(\read(var_1_2)) [L37] unsigned char stepLocal_0 = var_1_2; [L38] COND TRUE (-10 != var_1_8) || stepLocal_0 [L39] COND FALSE !(var_1_1 >= 500.5) [L75] RET step() [L76] CALL, EXPR property() [L66-L67] return (var_1_2 ? (var_1_1 == ((double) (var_1_3 + ((((((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5)))) > (var_1_6)) ? (((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5)))) : (var_1_6)))))) : 1) && (((-10 != var_1_8) || var_1_2) ? ((var_1_1 >= 500.5) ? (var_1_7 == ((unsigned char) var_1_9)) : 1) : 1) ; [L76] RET, EXPR property() [L76] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 10, 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=26occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 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 00:12:16,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 32bit --witnessprinter.graph.data.programhash edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:12:19,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:12:19,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:12:19,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:12:19,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:12:19,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:12:19,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:12:19,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:12:19,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:12:19,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:12:19,465 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:12:19,465 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:12:19,466 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:12:19,468 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:12:19,468 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:12:19,469 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:12:19,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:12:19,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:12:19,472 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:12:19,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:12:19,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:12:19,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:12:19,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:12:19,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:12:19,475 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:12:19,475 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:12:19,476 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:12:19,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:12:19,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:12:19,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:12:19,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:12:19,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:12:19,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:12:19,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:19,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:12:19,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:12:19,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:12:19,482 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:12:19,482 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:12:19,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:12:19,484 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:12:19,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:12:19,485 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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda [2023-11-12 00:12:19,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:12:20,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:12:20,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:12:20,034 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:12:20,034 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:12:20,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-12 00:12:23,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:12:23,575 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:12:23,577 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-12 00:12:23,591 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data/8eb191715/c082fbe8228e451b81ef3ecf2a156706/FLAG41a6f2089 [2023-11-12 00:12:23,608 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/data/8eb191715/c082fbe8228e451b81ef3ecf2a156706 [2023-11-12 00:12:23,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:12:23,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:12:23,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:23,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:12:23,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:12:23,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab58da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23, skipping insertion in model container [2023-11-12 00:12:23,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:23,814 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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-12 00:12:23,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:23,871 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:12:23,887 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_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-12 00:12:23,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:23,927 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:12:23,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23 WrapperNode [2023-11-12 00:12:23,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:23,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:23,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:12:23,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:12:23,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,976 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 80 [2023-11-12 00:12:23,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:23,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:12:23,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:12:23,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:12:23,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:24,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:24,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:24,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:24,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:24,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:12:24,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:12:24,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:12:24,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:12:24,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:24,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:24,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:24,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:12:24,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:12:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:12:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:12:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:12:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:12:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:12:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:12:24,217 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:12:24,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:12:25,129 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:12:25,136 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:12:25,137 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:12:25,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:25 BoogieIcfgContainer [2023-11-12 00:12:25,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:12:25,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:12:25,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:12:25,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:12:25,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:12:23" (1/3) ... [2023-11-12 00:12:25,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e9b0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:25, skipping insertion in model container [2023-11-12 00:12:25,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23" (2/3) ... [2023-11-12 00:12:25,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e9b0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:25, skipping insertion in model container [2023-11-12 00:12:25,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:25" (3/3) ... [2023-11-12 00:12:25,152 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-62.i [2023-11-12 00:12:25,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:12:25,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:12:25,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:12:25,224 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;@40df6554, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:12:25,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:12:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:12:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 00:12:25,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:25,244 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:12:25,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:25,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1896657020, now seen corresponding path program 1 times [2023-11-12 00:12:25,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:12:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291270967] [2023-11-12 00:12:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:25,274 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 00:12:25,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:12:25,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:25,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:25,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:12:25,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-12 00:12:25,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:12:25,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:12:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291270967] [2023-11-12 00:12:25,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291270967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:25,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:25,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:12:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033224773] [2023-11-12 00:12:25,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:25,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:12:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:12:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:12:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:25,663 INFO L87 Difference]: Start difference. First operand has 40 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-12 00:12:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:25,687 INFO L93 Difference]: Finished difference Result 73 states and 114 transitions. [2023-11-12 00:12:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:12:25,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2023-11-12 00:12:25,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:25,708 INFO L225 Difference]: With dead ends: 73 [2023-11-12 00:12:25,708 INFO L226 Difference]: Without dead ends: 36 [2023-11-12 00:12:25,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:25,716 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:25,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:12:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-12 00:12:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-12 00:12:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:12:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-11-12 00:12:25,762 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 69 [2023-11-12 00:12:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:25,762 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-11-12 00:12:25,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-12 00:12:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-11-12 00:12:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 00:12:25,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:25,767 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:12:25,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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)] Ended with exit code 0 [2023-11-12 00:12:25,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:25,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:25,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1688895292, now seen corresponding path program 1 times [2023-11-12 00:12:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:12:25,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647204895] [2023-11-12 00:12:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:25,971 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 00:12:25,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:12:25,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:25,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:26,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:12:26,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 43 proven. 24 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-12 00:12:26,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:12:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-12 00:12:26,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:12:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647204895] [2023-11-12 00:12:26,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647204895] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:12:26,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:12:26,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-12 00:12:26,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464327154] [2023-11-12 00:12:26,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:26,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:12:26,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:12:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:12:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:12:26,654 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:12:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:26,966 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2023-11-12 00:12:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:12:26,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 69 [2023-11-12 00:12:26,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:26,975 INFO L225 Difference]: With dead ends: 80 [2023-11-12 00:12:26,977 INFO L226 Difference]: Without dead ends: 47 [2023-11-12 00:12:26,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:12:26,979 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 14 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:26,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 143 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:12:26,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-12 00:12:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2023-11-12 00:12:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:12:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2023-11-12 00:12:26,997 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 69 [2023-11-12 00:12:27,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:27,001 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2023-11-12 00:12:27,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:12:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2023-11-12 00:12:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 00:12:27,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:27,007 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:12:27,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:27,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:27,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:27,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:27,225 INFO L85 PathProgramCache]: Analyzing trace with hash 86112070, now seen corresponding path program 1 times [2023-11-12 00:12:27,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:12:27,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117577946] [2023-11-12 00:12:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:27,226 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 00:12:27,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:12:27,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 00:12:27,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87a73d0-b417-4ea6-8f2c-ddf780fca4c5/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 (4)] Waiting until timeout for monitored process [2023-11-12 00:12:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:27,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:12:27,482 INFO L285 TraceCheckSpWp]: Computing forward predicates...