./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 980b1737abc4897cffcf9ffd697bb8a6c2567cb964b43bf5603c43f896e3728c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:15:06,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:15:06,886 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:15:06,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:15:06,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:15:06,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:15:06,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:15:06,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:15:06,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:15:06,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:15:06,943 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:15:06,944 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:15:06,945 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:15:06,947 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:15:06,947 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:15:06,948 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:15:06,948 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:15:06,949 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:15:06,949 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:15:06,950 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:15:06,950 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:15:06,951 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:15:06,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:15:06,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:15:06,954 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:15:06,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:15:06,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:15:06,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:15:06,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:15:06,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:15:06,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:15:06,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:15:06,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:15:06,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:15:06,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:15:06,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:15:06,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:06,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:15:06,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:15:06,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:15:06,961 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:15:06,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:15:06,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:15:06,963 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:15:06,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:15:06,964 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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 980b1737abc4897cffcf9ffd697bb8a6c2567cb964b43bf5603c43f896e3728c [2023-11-12 00:15:07,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:15:07,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:15:07,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:15:07,345 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:15:07,346 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:15:07,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i [2023-11-12 00:15:10,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:15:10,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:15:10,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i [2023-11-12 00:15:10,713 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data/a543f7a49/1ce0604b436c44898454f6999cb0c78a/FLAG711766f28 [2023-11-12 00:15:10,729 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data/a543f7a49/1ce0604b436c44898454f6999cb0c78a [2023-11-12 00:15:10,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:15:10,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:15:10,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:10,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:15:10,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:15:10,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:10" (1/1) ... [2023-11-12 00:15:10,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c40a5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:10, skipping insertion in model container [2023-11-12 00:15:10,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:10" (1/1) ... [2023-11-12 00:15:10,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:15:10,970 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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i[915,928] [2023-11-12 00:15:11,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:11,029 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:15:11,045 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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i[915,928] [2023-11-12 00:15:11,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:11,091 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:15:11,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11 WrapperNode [2023-11-12 00:15:11,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:11,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:11,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:15:11,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:15:11,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,153 INFO L138 Inliner]: procedures = 26, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 62 [2023-11-12 00:15:11,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:11,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:15:11,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:15:11,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:15:11,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:15:11,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:15:11,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:15:11,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:15:11,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:11,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:11,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:15:11,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:15:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:15:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:15:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:15:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:15:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:15:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:15:11,366 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:15:11,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:11,599 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:11,691 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:11,692 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:15:11,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:11 BoogieIcfgContainer [2023-11-12 00:15:11,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:11,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:11,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:11,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:11,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:15:10" (1/3) ... [2023-11-12 00:15:11,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bea1eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:11, skipping insertion in model container [2023-11-12 00:15:11,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (2/3) ... [2023-11-12 00:15:11,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bea1eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:11, skipping insertion in model container [2023-11-12 00:15:11,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:11" (3/3) ... [2023-11-12 00:15:11,709 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-22.i [2023-11-12 00:15:11,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:11,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:15:11,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:11,792 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;@1daf2700, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:11,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:15:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-12 00:15:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:15:11,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:11,810 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:11,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:11,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:11,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1637727639, now seen corresponding path program 1 times [2023-11-12 00:15:11,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:11,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494863783] [2023-11-12 00:15:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:11,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:15:11,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:15:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:15:12,130 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:15:12,132 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:15:12,133 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:15:12,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:15:12,142 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:15:12,147 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:15:12,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:15:12 BoogieIcfgContainer [2023-11-12 00:15:12,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:15:12,190 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:15:12,190 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:15:12,190 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:15:12,191 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:11" (3/4) ... [2023-11-12 00:15:12,194 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:15:12,195 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:15:12,196 INFO L158 Benchmark]: Toolchain (without parser) took 1462.79ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 73.3MB in the end (delta: 49.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-12 00:15:12,197 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:15:12,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.18ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 110.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:15:12,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.77ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 109.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:15:12,200 INFO L158 Benchmark]: Boogie Preprocessor took 36.25ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:15:12,205 INFO L158 Benchmark]: RCFGBuilder took 503.14ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 92.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:15:12,206 INFO L158 Benchmark]: TraceAbstraction took 485.14ms. Allocated memory is still 167.8MB. Free memory was 91.6MB in the beginning and 73.4MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 00:15:12,207 INFO L158 Benchmark]: Witness Printer took 5.30ms. Allocated memory is still 167.8MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:15:12,215 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.18ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 110.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.77ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 109.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.25ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.14ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 92.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 485.14ms. Allocated memory is still 167.8MB. Free memory was 91.6MB in the beginning and 73.4MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.30ms. Allocated memory is still 167.8MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 2.6kB). 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 31, overapproximation of someBinaryFLOATComparisonOperation at line 54. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 0; [L23] double var_1_2 = 999999.2; [L24] unsigned char var_1_3 = 0; [L25] float var_1_4 = 100.52; [L26] double var_1_5 = 31.2; [L27] float var_1_6 = 5.8; [L58] isInitial = 1 [L59] FCALL initially() [L60] COND TRUE 1 [L61] FCALL updateLastVariables() [L62] CALL updateVariables() [L41] var_1_2 = __VERIFIER_nondet_double() [L42] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=156/5, var_1_6=29/5] [L20] COND FALSE !(!cond) [L42] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=156/5, var_1_6=29/5] [L43] var_1_3 = __VERIFIER_nondet_uchar() [L44] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=156/5, var_1_6=29/5] [L20] COND FALSE !(!cond) [L44] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=156/5, var_1_6=29/5] [L45] CALL assume_abort_if_not(var_1_3 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=156/5, var_1_6=29/5] [L20] COND FALSE !(!cond) [L45] RET assume_abort_if_not(var_1_3 <= 0) VAL [isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=156/5, var_1_6=29/5] [L46] var_1_5 = __VERIFIER_nondet_double() [L47] CALL assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=1000004, var_1_6=29/5] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=1000004, var_1_6=29/5] [L48] var_1_6 = __VERIFIER_nondet_float() [L49] CALL assume_abort_if_not((var_1_6 >= -922337.2036854765600e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=1000004, var_1_6=2513/25] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not((var_1_6 >= -922337.2036854765600e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=1000004, var_1_6=2513/25] [L62] RET updateVariables() [L63] CALL step() [L31] COND FALSE !(var_1_2 <= var_1_5) [L36] COND FALSE !(1.125 >= var_1_4) [L63] RET step() [L64] CALL, EXPR property() [L54-L55] return ((1.125 >= var_1_4) ? (var_1_1 == ((unsigned char) (! (! var_1_3)))) : 1) && ((var_1_2 <= var_1_5) ? ((! var_1_3) ? (var_1_4 == ((float) var_1_6)) : 1) : 1) ; [L64] RET, EXPR property() [L64] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=1000004, var_1_6=2513/25] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=0, var_1_3=0, var_1_4=2513/25, var_1_5=1000004, var_1_6=2513/25] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 5, 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=18occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 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 00:15:12,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 980b1737abc4897cffcf9ffd697bb8a6c2567cb964b43bf5603c43f896e3728c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:15:14,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:15:15,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:15:15,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:15:15,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:15:15,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:15:15,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:15:15,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:15:15,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:15:15,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:15:15,198 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:15:15,198 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:15:15,199 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:15:15,200 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:15:15,201 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:15:15,201 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:15:15,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:15:15,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:15:15,204 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:15:15,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:15:15,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:15:15,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:15:15,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:15:15,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:15:15,207 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:15:15,207 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:15:15,207 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:15:15,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:15:15,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:15:15,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:15:15,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:15:15,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:15:15,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:15:15,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:15,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:15:15,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:15:15,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:15:15,213 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:15:15,213 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:15:15,214 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:15:15,214 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:15:15,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:15:15,215 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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 980b1737abc4897cffcf9ffd697bb8a6c2567cb964b43bf5603c43f896e3728c [2023-11-12 00:15:15,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:15:15,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:15:15,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:15:15,676 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:15:15,677 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:15:15,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i [2023-11-12 00:15:19,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:15:19,318 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:15:19,319 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i [2023-11-12 00:15:19,327 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data/4a4a19d87/e373e47bb02d48af863468780cae0214/FLAGfe939e44a [2023-11-12 00:15:19,355 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/data/4a4a19d87/e373e47bb02d48af863468780cae0214 [2023-11-12 00:15:19,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:15:19,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:15:19,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:19,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:15:19,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:15:19,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2746255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19, skipping insertion in model container [2023-11-12 00:15:19,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:15:19,598 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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i[915,928] [2023-11-12 00:15:19,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:19,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:15:19,686 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_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-22.i[915,928] [2023-11-12 00:15:19,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:19,732 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:15:19,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19 WrapperNode [2023-11-12 00:15:19,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:19,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:19,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:15:19,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:15:19,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,799 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 62 [2023-11-12 00:15:19,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:19,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:15:19,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:15:19,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:15:19,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:15:19,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:15:19,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:15:19,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:15:19,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (1/1) ... [2023-11-12 00:15:19,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:19,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:15:19,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:15:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:15:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:15:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:15:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:15:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:15:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:15:20,047 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:15:20,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:20,487 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:20,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:20,494 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:15:20,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:20 BoogieIcfgContainer [2023-11-12 00:15:20,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:20,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:20,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:20,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:20,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:15:19" (1/3) ... [2023-11-12 00:15:20,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49625bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:20, skipping insertion in model container [2023-11-12 00:15:20,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:19" (2/3) ... [2023-11-12 00:15:20,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49625bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:20, skipping insertion in model container [2023-11-12 00:15:20,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:20" (3/3) ... [2023-11-12 00:15:20,506 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-22.i [2023-11-12 00:15:20,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:20,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:15:20,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:20,586 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;@57d4d323, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:20,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:15:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-12 00:15:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-12 00:15:20,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:20,601 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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 00:15:20,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:20,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash -706627639, now seen corresponding path program 1 times [2023-11-12 00:15:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:20,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833010814] [2023-11-12 00:15:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:20,623 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 00:15:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:20,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:20,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:20,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:15:20,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 00:15:20,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:20,977 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:20,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833010814] [2023-11-12 00:15:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833010814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:20,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:15:20,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468531624] [2023-11-12 00:15:20,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:20,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:15:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:15:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:15:21,020 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 00:15:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:21,044 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2023-11-12 00:15:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:15:21,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-11-12 00:15:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:21,054 INFO L225 Difference]: With dead ends: 55 [2023-11-12 00:15:21,054 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:15:21,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 39 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 00:15:21,062 INFO L413 NwaCegarLoop]: 34 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, 34 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 00:15:21,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:15:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:15:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-12 00:15:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-12 00:15:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2023-11-12 00:15:21,115 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 40 [2023-11-12 00:15:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:21,116 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2023-11-12 00:15:21,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 00:15:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2023-11-12 00:15:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-12 00:15:21,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:21,122 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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 00:15:21,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:21,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:21,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:21,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -51026809, now seen corresponding path program 1 times [2023-11-12 00:15:21,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:21,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426273509] [2023-11-12 00:15:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:21,346 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 00:15:21,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:21,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:21,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:21,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:15:21,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-12 00:15:22,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:22,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426273509] [2023-11-12 00:15:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426273509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:22,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:15:22,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168083457] [2023-11-12 00:15:22,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:22,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:22,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:22,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:22,028 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:22,586 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2023-11-12 00:15:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:22,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 40 [2023-11-12 00:15:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:22,591 INFO L225 Difference]: With dead ends: 75 [2023-11-12 00:15:22,591 INFO L226 Difference]: Without dead ends: 51 [2023-11-12 00:15:22,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:22,593 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:22,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:15:22,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-12 00:15:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-11-12 00:15:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:15:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2023-11-12 00:15:22,617 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 40 [2023-11-12 00:15:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:22,617 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2023-11-12 00:15:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2023-11-12 00:15:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-12 00:15:22,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:22,620 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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 00:15:22,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:22,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:22,835 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:22,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash -49179767, now seen corresponding path program 1 times [2023-11-12 00:15:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:22,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721090453] [2023-11-12 00:15:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:22,837 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 00:15:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:22,839 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:22,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:23,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:15:23,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-12 00:15:24,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:24,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:24,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721090453] [2023-11-12 00:15:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721090453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:24,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:24,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:15:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972047433] [2023-11-12 00:15:24,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:24,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:15:24,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:15:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:15:24,167 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:25,758 INFO L93 Difference]: Finished difference Result 79 states and 100 transitions. [2023-11-12 00:15:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:15:25,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 40 [2023-11-12 00:15:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:25,765 INFO L225 Difference]: With dead ends: 79 [2023-11-12 00:15:25,765 INFO L226 Difference]: Without dead ends: 77 [2023-11-12 00:15:25,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:15:25,767 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:25,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 146 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 00:15:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-12 00:15:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2023-11-12 00:15:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:15:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2023-11-12 00:15:25,783 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 40 [2023-11-12 00:15:25,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:25,784 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2023-11-12 00:15:25,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2023-11-12 00:15:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 00:15:25,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:25,787 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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 00:15:25,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:26,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:26,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:26,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash -294239510, now seen corresponding path program 1 times [2023-11-12 00:15:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17817238] [2023-11-12 00:15:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:26,003 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 00:15:26,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:26,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:26,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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)] Waiting until timeout for monitored process [2023-11-12 00:15:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:26,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:15:26,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:15:26,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:26,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17817238] [2023-11-12 00:15:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17817238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1077568123] [2023-11-12 00:15:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:26,407 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:15:26,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:15:26,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:15:26,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-12 00:15:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:27,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:15:27,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-12 00:15:29,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:29,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1077568123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:29,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:15:29,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 12 [2023-11-12 00:15:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800163278] [2023-11-12 00:15:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:29,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:15:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:29,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:15:29,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:15:29,811 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:37,875 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2023-11-12 00:15:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:15:37,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2023-11-12 00:15:37,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:37,882 INFO L225 Difference]: With dead ends: 115 [2023-11-12 00:15:37,882 INFO L226 Difference]: Without dead ends: 113 [2023-11-12 00:15:37,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:15:37,884 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 40 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:37,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 246 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-12 00:15:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-12 00:15:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 53. [2023-11-12 00:15:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:15:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2023-11-12 00:15:37,901 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 41 [2023-11-12 00:15:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:37,902 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2023-11-12 00:15:37,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2023-11-12 00:15:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 00:15:37,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:37,904 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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 00:15:37,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:38,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:38,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:38,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:38,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash -353344854, now seen corresponding path program 1 times [2023-11-12 00:15:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:38,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806497110] [2023-11-12 00:15:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:38,313 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 00:15:38,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:38,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:38,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 (7)] Waiting until timeout for monitored process [2023-11-12 00:15:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:38,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:15:38,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:42,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:42,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806497110] [2023-11-12 00:15:42,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806497110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:42,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:42,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:15:42,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82961048] [2023-11-12 00:15:42,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:42,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:15:42,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:15:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:15:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:15:42,043 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:45,875 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2023-11-12 00:15:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-12 00:15:45,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2023-11-12 00:15:45,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:45,884 INFO L225 Difference]: With dead ends: 117 [2023-11-12 00:15:45,884 INFO L226 Difference]: Without dead ends: 115 [2023-11-12 00:15:45,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:15:45,887 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:45,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 222 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 00:15:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-12 00:15:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2023-11-12 00:15:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 57 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:15:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2023-11-12 00:15:45,906 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 41 [2023-11-12 00:15:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:45,907 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2023-11-12 00:15:45,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:15:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2023-11-12 00:15:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 00:15:45,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:45,910 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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 00:15:45,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:46,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:46,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:46,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:46,114 INFO L85 PathProgramCache]: Analyzing trace with hash -351497812, now seen corresponding path program 1 times [2023-11-12 00:15:46,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:15:46,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529038895] [2023-11-12 00:15:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:46,115 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 00:15:46,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:15:46,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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 00:15:46,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/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)] Waiting until timeout for monitored process [2023-11-12 00:15:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:46,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 00:15:46,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 00:15:48,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-12 00:15:59,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:15:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529038895] [2023-11-12 00:15:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529038895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [236515157] [2023-11-12 00:15:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:59,182 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:15:59,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:15:59,186 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:15:59,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65195b5-dfe3-4d8d-af98-71652b4b0bc6/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-12 00:15:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:16:00,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 00:16:00,008 INFO L285 TraceCheckSpWp]: Computing forward predicates...