./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:00:04,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:00:04,162 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:00:04,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:00:04,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:00:04,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:00:04,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:00:04,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:00:04,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:00:04,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:00:04,200 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:00:04,201 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:00:04,201 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:00:04,202 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:00:04,202 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:00:04,203 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:00:04,204 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:00:04,204 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:00:04,205 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:00:04,205 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:00:04,206 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:00:04,206 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:00:04,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:00:04,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:00:04,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:00:04,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:00:04,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:00:04,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:00:04,221 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:00:04,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:00:04,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:00:04,222 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:00:04,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:00:04,223 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:00:04,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:00:04,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:00:04,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:04,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:00:04,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:00:04,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:00:04,227 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:00:04,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:00:04,228 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:00:04,228 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:00:04,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:00:04,229 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_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 [2023-11-19 05:00:04,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:00:04,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:00:04,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:00:04,557 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:00:04,557 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:00:04,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-19 05:00:07,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:00:08,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:00:08,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-19 05:00:08,089 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data/8a12b6c50/cd04898a286d4cba94076bba26269e81/FLAGf2db6a8fe [2023-11-19 05:00:08,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data/8a12b6c50/cd04898a286d4cba94076bba26269e81 [2023-11-19 05:00:08,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:00:08,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:00:08,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:08,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:00:08,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:00:08,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4123201f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08, skipping insertion in model container [2023-11-19 05:00:08,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:00:08,335 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_b7707821-85d1-4bbf-8990-9e0e6530f3b0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-19 05:00:08,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:08,441 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:00:08,460 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_b7707821-85d1-4bbf-8990-9e0e6530f3b0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-19 05:00:08,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:08,533 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:00:08,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08 WrapperNode [2023-11-19 05:00:08,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:08,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:08,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:00:08,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:00:08,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,657 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213 [2023-11-19 05:00:08,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:08,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:00:08,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:00:08,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:00:08,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:00:08,746 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:00:08,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:00:08,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:00:08,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (1/1) ... [2023-11-19 05:00:08,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:08,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:08,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:00:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:00:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:00:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:00:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:00:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:00:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:00:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:00:08,956 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:00:08,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:00:09,704 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:00:10,145 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:00:10,146 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:00:10,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:10 BoogieIcfgContainer [2023-11-19 05:00:10,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:00:10,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:00:10,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:00:10,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:00:10,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:00:08" (1/3) ... [2023-11-19 05:00:10,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afdbe06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:10, skipping insertion in model container [2023-11-19 05:00:10,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:08" (2/3) ... [2023-11-19 05:00:10,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afdbe06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:10, skipping insertion in model container [2023-11-19 05:00:10,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:10" (3/3) ... [2023-11-19 05:00:10,164 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-19 05:00:10,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:00:10,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:00:10,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:00:10,273 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;@32832050, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:00:10,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:00:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:00:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 05:00:10,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:10,299 INFO L195 NwaCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:10,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:10,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash 518336441, now seen corresponding path program 1 times [2023-11-19 05:00:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:10,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038745426] [2023-11-19 05:00:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:10,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:10,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:10,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885146811] [2023-11-19 05:00:10,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:10,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:10,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:10,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:10,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:00:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:00:10,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:00:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:00:11,168 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:00:11,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:00:11,173 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:00:11,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:11,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:00:11,389 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:00:11,393 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:00:11,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:00:11 BoogieIcfgContainer [2023-11-19 05:00:11,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:00:11,543 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:00:11,544 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:00:11,544 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:00:11,544 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:10" (3/4) ... [2023-11-19 05:00:11,547 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:00:11,548 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:00:11,550 INFO L158 Benchmark]: Toolchain (without parser) took 3438.57ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 110.1MB in the beginning and 129.0MB in the end (delta: -18.9MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-11-19 05:00:11,551 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory was 123.6MB in the beginning and 123.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:00:11,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.40ms. Allocated memory is still 155.2MB. Free memory was 110.1MB in the beginning and 93.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:00:11,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.93ms. Allocated memory is still 155.2MB. Free memory was 93.3MB in the beginning and 87.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:00:11,553 INFO L158 Benchmark]: Boogie Preprocessor took 86.72ms. Allocated memory is still 155.2MB. Free memory was 87.0MB in the beginning and 83.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:00:11,554 INFO L158 Benchmark]: RCFGBuilder took 1404.99ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 99.9MB in the end (delta: -16.1MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2023-11-19 05:00:11,555 INFO L158 Benchmark]: TraceAbstraction took 1388.98ms. Allocated memory is still 186.6MB. Free memory was 98.9MB in the beginning and 129.0MB in the end (delta: -30.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:00:11,555 INFO L158 Benchmark]: Witness Printer took 5.24ms. Allocated memory is still 186.6MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:00:11,559 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory was 123.6MB in the beginning and 123.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.40ms. Allocated memory is still 155.2MB. Free memory was 110.1MB in the beginning and 93.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.93ms. Allocated memory is still 155.2MB. Free memory was 93.3MB in the beginning and 87.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.72ms. Allocated memory is still 155.2MB. Free memory was 87.0MB in the beginning and 83.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1404.99ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 99.9MB in the end (delta: -16.1MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1388.98ms. Allocated memory is still 186.6MB. Free memory was 98.9MB in the beginning and 129.0MB in the end (delta: -30.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.24ms. Allocated memory is still 186.6MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 186, overapproximation of bitwiseAnd at line 56, overapproximation of someBinaryArithmeticDOUBLEoperation at line 138. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 4; [L23] unsigned char var_1_5 = 200; [L24] unsigned char var_1_6 = 4; [L25] unsigned char var_1_7 = 100; [L26] signed long int var_1_8 = -256; [L27] unsigned char var_1_9 = 1; [L28] unsigned char var_1_10 = 1; [L29] unsigned char var_1_11 = 0; [L30] unsigned char var_1_12 = 1; [L31] unsigned char var_1_13 = 200; [L32] signed char var_1_14 = 16; [L33] unsigned char var_1_15 = 0; [L34] unsigned char var_1_17 = 1; [L35] signed char var_1_18 = -25; [L36] signed short int var_1_19 = -10; [L37] unsigned char var_1_20 = 2; [L38] unsigned char var_1_22 = 32; [L39] unsigned char var_1_23 = 4; [L40] double var_1_24 = 128.6; [L41] double var_1_25 = 0.6; [L42] double var_1_26 = 99.375; [L43] signed short int var_1_27 = 1; [L44] unsigned long int var_1_29 = 128; [L45] unsigned char last_1_var_1_9 = 1; [L46] unsigned char last_1_var_1_12 = 1; [L47] unsigned char last_1_var_1_13 = 200; [L48] unsigned char last_1_var_1_15 = 0; [L49] signed char last_1_var_1_18 = -25; [L50] signed short int last_1_var_1_19 = -10; [L51] unsigned char last_1_var_1_20 = 2; [L52] signed short int last_1_var_1_27 = 1; [L190] isInitial = 1 [L191] FCALL initially() [L192] COND TRUE 1 [L193] CALL updateLastVariables() [L176] last_1_var_1_9 = var_1_9 [L177] last_1_var_1_12 = var_1_12 [L178] last_1_var_1_13 = var_1_13 [L179] last_1_var_1_15 = var_1_15 [L180] last_1_var_1_18 = var_1_18 [L181] last_1_var_1_19 = var_1_19 [L182] last_1_var_1_20 = var_1_20 [L183] last_1_var_1_27 = var_1_27 [L193] RET updateLastVariables() [L194] CALL updateVariables() [L143] var_1_5 = __VERIFIER_nondet_uchar() [L144] CALL assume_abort_if_not(var_1_5 >= 190) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L144] RET assume_abort_if_not(var_1_5 >= 190) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L145] CALL assume_abort_if_not(var_1_5 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L145] RET assume_abort_if_not(var_1_5 <= 254) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L146] var_1_6 = __VERIFIER_nondet_uchar() [L147] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L147] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=100, var_1_8=-256, var_1_9=1] [L148] CALL assume_abort_if_not(var_1_6 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L148] RET assume_abort_if_not(var_1_6 <= 63) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=100, var_1_8=-256, var_1_9=1] [L149] var_1_7 = __VERIFIER_nondet_uchar() [L150] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L150] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L151] CALL assume_abort_if_not(var_1_7 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L151] RET assume_abort_if_not(var_1_7 <= 127) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L152] var_1_10 = __VERIFIER_nondet_uchar() [L153] CALL assume_abort_if_not(var_1_10 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L153] RET assume_abort_if_not(var_1_10 >= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L154] CALL assume_abort_if_not(var_1_10 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L154] RET assume_abort_if_not(var_1_10 <= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L155] var_1_11 = __VERIFIER_nondet_uchar() [L156] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L156] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L157] CALL assume_abort_if_not(var_1_11 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L157] RET assume_abort_if_not(var_1_11 <= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L158] var_1_14 = __VERIFIER_nondet_char() [L159] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L159] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L160] CALL assume_abort_if_not(var_1_14 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L160] RET assume_abort_if_not(var_1_14 <= 63) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L161] var_1_17 = __VERIFIER_nondet_uchar() [L162] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L162] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L163] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L163] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L164] var_1_22 = __VERIFIER_nondet_uchar() [L165] CALL assume_abort_if_not(var_1_22 >= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L165] RET assume_abort_if_not(var_1_22 >= 32) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L166] CALL assume_abort_if_not(var_1_22 <= 64) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L166] RET assume_abort_if_not(var_1_22 <= 64) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L167] var_1_23 = __VERIFIER_nondet_uchar() [L168] CALL assume_abort_if_not(var_1_23 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L168] RET assume_abort_if_not(var_1_23 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L169] CALL assume_abort_if_not(var_1_23 <= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L169] RET assume_abort_if_not(var_1_23 <= 32) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L170] var_1_25 = __VERIFIER_nondet_double() [L171] CALL assume_abort_if_not((var_1_25 >= -461168.6018427382800e+13F && var_1_25 <= -1.0e-20F) || (var_1_25 <= 4611686.018427382800e+12F && var_1_25 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=2, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L171] RET assume_abort_if_not((var_1_25 >= -461168.6018427382800e+13F && var_1_25 <= -1.0e-20F) || (var_1_25 <= 4611686.018427382800e+12F && var_1_25 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=2, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L172] var_1_26 = __VERIFIER_nondet_double() [L173] CALL assume_abort_if_not((var_1_26 >= -461168.6018427382800e+13F && var_1_26 <= -1.0e-20F) || (var_1_26 <= 4611686.018427382800e+12F && var_1_26 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=2, var_1_26=3, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L173] RET assume_abort_if_not((var_1_26 >= -461168.6018427382800e+13F && var_1_26 <= -1.0e-20F) || (var_1_26 <= 4611686.018427382800e+12F && var_1_26 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=60, var_1_23=0, var_1_24=643/5, var_1_25=2, var_1_26=3, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=-256, var_1_9=1] [L194] RET updateVariables() [L195] CALL step() [L56] var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27)) [L56] COND TRUE var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27)) [L57] COND FALSE !(last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) [L60] COND TRUE (~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6)))) [L61] var_1_15 = (! (! (last_1_var_1_9 && var_1_11))) [L73] COND FALSE !(((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) [L76] var_1_1 = (var_1_6 + var_1_7) [L78] unsigned char stepLocal_4 = last_1_var_1_13 < var_1_5; [L79] COND TRUE (last_1_var_1_12 > -4) || stepLocal_4 [L80] var_1_19 = last_1_var_1_20 [L82] COND FALSE !(\read(var_1_15)) [L85] var_1_8 = (25 + var_1_6) [L87] COND FALSE !(\read(var_1_11)) [L90] COND FALSE !(\read(var_1_11)) [L97] COND TRUE var_1_1 <= var_1_5 [L98] var_1_20 = var_1_6 [L101] signed char stepLocal_5 = var_1_14; [L102] COND TRUE var_1_22 > stepLocal_5 [L103] var_1_27 = var_1_19 [L107] signed short int stepLocal_1 = var_1_27; [L108] COND TRUE \read(var_1_10) [L109] var_1_13 = var_1_7 [L117] unsigned char stepLocal_3 = var_1_1; [L118] signed long int stepLocal_2 = var_1_5 ^ 1; [L119] COND TRUE stepLocal_2 >= (~ -8) [L120] var_1_18 = var_1_6 [L126] signed long int stepLocal_6 = (var_1_18 / var_1_22) / var_1_5; [L127] COND FALSE !(var_1_13 <= stepLocal_6) [L130] unsigned char stepLocal_0 = var_1_15; [L131] COND FALSE !((var_1_18 < var_1_1) && stepLocal_0) [L134] var_1_9 = (! var_1_11) [L136] COND TRUE var_1_7 <= var_1_22 [L137] COND TRUE \read(var_1_9) [L138] var_1_24 = (var_1_25 + var_1_26) [L195] RET step() [L196] CALL, EXPR property() [L186] EXPR ((((((((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) ? (var_1_1 == ((unsigned char) ((var_1_5 - var_1_6) - var_1_7))) : (var_1_1 == ((unsigned char) (var_1_6 + var_1_7)))) && (var_1_15 ? (var_1_8 == ((signed long int) ((((var_1_6) > (var_1_7)) ? (var_1_6) : (var_1_7))))) : (var_1_8 == ((signed long int) (25 + var_1_6))))) && (((var_1_18 < var_1_1) && var_1_15) ? (var_1_9 == ((unsigned char) ((var_1_18 > var_1_1) || var_1_10))) : (var_1_9 == ((unsigned char) (! var_1_11))))) && (var_1_11 ? (var_1_12 == ((unsigned char) var_1_6)) : 1)) && (var_1_10 ? (var_1_13 == ((unsigned char) var_1_7)) : ((((var_1_6 + var_1_14) - var_1_7) >= var_1_27) ? (var_1_13 == ((unsigned char) var_1_14)) : (var_1_13 == ((unsigned char) var_1_14))))) && ((var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27))) ? ((last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) ? (var_1_15 == ((unsigned char) (! var_1_11))) : (((~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))))) ? (var_1_15 == ((unsigned char) (! (! (last_1_var_1_9 && var_1_11))))) : (var_1_15 == ((unsigned char) (! var_1_11))))) : (var_1_11 ? (var_1_15 == ((unsigned char) var_1_17)) : (var_1_15 == ((unsigned char) var_1_17)))) [L186] EXPR var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27)) [L186] EXPR ((((((((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) ? (var_1_1 == ((unsigned char) ((var_1_5 - var_1_6) - var_1_7))) : (var_1_1 == ((unsigned char) (var_1_6 + var_1_7)))) && (var_1_15 ? (var_1_8 == ((signed long int) ((((var_1_6) > (var_1_7)) ? (var_1_6) : (var_1_7))))) : (var_1_8 == ((signed long int) (25 + var_1_6))))) && (((var_1_18 < var_1_1) && var_1_15) ? (var_1_9 == ((unsigned char) ((var_1_18 > var_1_1) || var_1_10))) : (var_1_9 == ((unsigned char) (! var_1_11))))) && (var_1_11 ? (var_1_12 == ((unsigned char) var_1_6)) : 1)) && (var_1_10 ? (var_1_13 == ((unsigned char) var_1_7)) : ((((var_1_6 + var_1_14) - var_1_7) >= var_1_27) ? (var_1_13 == ((unsigned char) var_1_14)) : (var_1_13 == ((unsigned char) var_1_14))))) && ((var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27))) ? ((last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) ? (var_1_15 == ((unsigned char) (! var_1_11))) : (((~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))))) ? (var_1_15 == ((unsigned char) (! (! (last_1_var_1_9 && var_1_11))))) : (var_1_15 == ((unsigned char) (! var_1_11))))) : (var_1_11 ? (var_1_15 == ((unsigned char) var_1_17)) : (var_1_15 == ((unsigned char) var_1_17)))) [L186-L187] return ((((((((((((((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) ? (var_1_1 == ((unsigned char) ((var_1_5 - var_1_6) - var_1_7))) : (var_1_1 == ((unsigned char) (var_1_6 + var_1_7)))) && (var_1_15 ? (var_1_8 == ((signed long int) ((((var_1_6) > (var_1_7)) ? (var_1_6) : (var_1_7))))) : (var_1_8 == ((signed long int) (25 + var_1_6))))) && (((var_1_18 < var_1_1) && var_1_15) ? (var_1_9 == ((unsigned char) ((var_1_18 > var_1_1) || var_1_10))) : (var_1_9 == ((unsigned char) (! var_1_11))))) && (var_1_11 ? (var_1_12 == ((unsigned char) var_1_6)) : 1)) && (var_1_10 ? (var_1_13 == ((unsigned char) var_1_7)) : ((((var_1_6 + var_1_14) - var_1_7) >= var_1_27) ? (var_1_13 == ((unsigned char) var_1_14)) : (var_1_13 == ((unsigned char) var_1_14))))) && ((var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27))) ? ((last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) ? (var_1_15 == ((unsigned char) (! var_1_11))) : (((~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))))) ? (var_1_15 == ((unsigned char) (! (! (last_1_var_1_9 && var_1_11))))) : (var_1_15 == ((unsigned char) (! var_1_11))))) : (var_1_11 ? (var_1_15 == ((unsigned char) var_1_17)) : (var_1_15 == ((unsigned char) var_1_17))))) && (((var_1_5 ^ 1) >= (~ -8)) ? (var_1_18 == ((signed char) var_1_6)) : ((var_1_1 == var_1_20) ? (var_1_18 == ((signed char) var_1_14)) : 1))) && (((last_1_var_1_12 > -4) || (last_1_var_1_13 < var_1_5)) ? (var_1_19 == ((signed short int) last_1_var_1_20)) : 1)) && (var_1_11 ? (((var_1_19 >= var_1_19) || (var_1_19 >= ((((var_1_5) > (var_1_1)) ? (var_1_5) : (var_1_1))))) ? (var_1_20 == ((unsigned char) (var_1_7 + var_1_6))) : (var_1_20 == ((unsigned char) (var_1_6 + ((var_1_22 - var_1_23) + var_1_14))))) : ((var_1_1 <= var_1_5) ? (var_1_20 == ((unsigned char) var_1_6)) : 1))) && ((var_1_7 <= var_1_22) ? (var_1_9 ? (var_1_24 == ((double) (var_1_25 + var_1_26))) : 1) : 1)) && ((var_1_22 > var_1_14) ? (var_1_27 == ((signed short int) var_1_19)) : (var_1_27 == ((signed short int) (((((var_1_5) > ((var_1_6 + var_1_12))) ? (var_1_5) : ((var_1_6 + var_1_12)))) - var_1_14))))) && ((var_1_13 <= ((var_1_18 / var_1_22) / var_1_5)) ? (var_1_29 == ((unsigned long int) var_1_19)) : 1) ; [L196] RET, EXPR property() [L196] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=60, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=63, var_1_19=2, var_1_1=123, var_1_20=63, var_1_22=60, var_1_23=0, var_1_24=0, var_1_25=2, var_1_26=3, var_1_27=2, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=88, var_1_9=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=60, var_1_14=1, var_1_15=0, var_1_17=1, var_1_18=63, var_1_19=2, var_1_1=123, var_1_20=63, var_1_22=60, var_1_23=0, var_1_24=0, var_1_25=2, var_1_26=3, var_1_27=2, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=60, var_1_8=88, var_1_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 20, 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=40occurred 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 05:00:11,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:00:14,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:00:14,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:00:14,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:00:14,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:00:14,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:00:14,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:00:14,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:00:14,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:00:14,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:00:14,801 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:00:14,802 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:00:14,802 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:00:14,805 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:00:14,805 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:00:14,806 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:00:14,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:00:14,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:00:14,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:00:14,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:00:14,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:00:14,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:00:14,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:00:14,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:00:14,813 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:00:14,814 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:00:14,814 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:00:14,815 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:00:14,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:00:14,816 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:00:14,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:00:14,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:00:14,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:00:14,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:14,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:00:14,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:00:14,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:00:14,821 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:00:14,821 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:14,823 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:00:14,823 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:00:14,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:00:14,824 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_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 [2023-11-19 05:00:15,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:00:15,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:00:15,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:00:15,400 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:00:15,401 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:00:15,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-19 05:00:19,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:00:19,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:00:19,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-19 05:00:19,465 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data/9be954e01/59b62f8a235e4379afa4abde1bca395a/FLAG348daef70 [2023-11-19 05:00:19,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/data/9be954e01/59b62f8a235e4379afa4abde1bca395a [2023-11-19 05:00:19,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:00:19,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:00:19,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:19,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:00:19,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:00:19,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:19,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4831f8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19, skipping insertion in model container [2023-11-19 05:00:19,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:19,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:00:19,738 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_b7707821-85d1-4bbf-8990-9e0e6530f3b0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-19 05:00:19,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:19,847 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:00:19,858 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_b7707821-85d1-4bbf-8990-9e0e6530f3b0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-19 05:00:19,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:19,959 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:00:19,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19 WrapperNode [2023-11-19 05:00:19,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:19,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:19,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:00:19,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:00:19,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:19,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,040 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2023-11-19 05:00:20,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:20,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:00:20,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:00:20,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:00:20,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:00:20,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:00:20,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:00:20,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:00:20,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (1/1) ... [2023-11-19 05:00:20,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:20,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:20,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:00:20,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:00:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:00:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:00:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:00:20,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:00:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:00:20,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:00:20,331 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:00:20,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:00:21,507 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:00:21,528 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:00:21,528 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:00:21,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:21 BoogieIcfgContainer [2023-11-19 05:00:21,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:00:21,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:00:21,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:00:21,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:00:21,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:00:19" (1/3) ... [2023-11-19 05:00:21,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371dd4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:21, skipping insertion in model container [2023-11-19 05:00:21,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:19" (2/3) ... [2023-11-19 05:00:21,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371dd4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:21, skipping insertion in model container [2023-11-19 05:00:21,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:21" (3/3) ... [2023-11-19 05:00:21,569 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-19 05:00:21,606 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:00:21,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:00:21,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:00:21,660 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;@1169f998, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:00:21,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:00:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 53 states have (on average 1.471698113207547) internal successors, (78), 54 states have internal predecessors, (78), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:00:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 05:00:21,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:21,683 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:21,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:21,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1903866255, now seen corresponding path program 1 times [2023-11-19 05:00:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451994035] [2023-11-19 05:00:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:21,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:21,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:21,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:00:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:22,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:00:22,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-11-19 05:00:22,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:22,232 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:00:22,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451994035] [2023-11-19 05:00:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451994035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:22,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:22,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:00:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732918237] [2023-11-19 05:00:22,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:22,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:00:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:00:22,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:00:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:00:22,309 INFO L87 Difference]: Start difference. First operand has 76 states, 53 states have (on average 1.471698113207547) internal successors, (78), 54 states have internal predecessors, (78), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 05:00:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:22,358 INFO L93 Difference]: Finished difference Result 145 states and 250 transitions. [2023-11-19 05:00:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:00:22,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 140 [2023-11-19 05:00:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:22,367 INFO L225 Difference]: With dead ends: 145 [2023-11-19 05:00:22,368 INFO L226 Difference]: Without dead ends: 72 [2023-11-19 05:00:22,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:00:22,375 INFO L413 NwaCegarLoop]: 109 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, 109 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 [2023-11-19 05:00:22,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-19 05:00:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-19 05:00:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:00:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 109 transitions. [2023-11-19 05:00:22,424 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 109 transitions. Word has length 140 [2023-11-19 05:00:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:22,425 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 109 transitions. [2023-11-19 05:00:22,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 05:00:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 109 transitions. [2023-11-19 05:00:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 05:00:22,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:22,430 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:22,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:22,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:22,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:22,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -695238801, now seen corresponding path program 1 times [2023-11-19 05:00:22,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:22,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588816460] [2023-11-19 05:00:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:22,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:22,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:22,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:00:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:23,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:00:23,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 05:00:25,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:27,081 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:00:27,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588816460] [2023-11-19 05:00:27,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588816460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:00:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [615453535] [2023-11-19 05:00:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:27,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:00:27,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:00:27,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 05:00:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:27,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:27,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 05:00:28,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [615453535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:28,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:00:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-11-19 05:00:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973732492] [2023-11-19 05:00:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:00:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:00:28,086 INFO L87 Difference]: Start difference. First operand 72 states and 109 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:28,917 INFO L93 Difference]: Finished difference Result 260 states and 395 transitions. [2023-11-19 05:00:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:00:28,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-11-19 05:00:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:28,940 INFO L225 Difference]: With dead ends: 260 [2023-11-19 05:00:28,940 INFO L226 Difference]: Without dead ends: 191 [2023-11-19 05:00:28,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:00:28,943 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 141 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:28,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 371 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:00:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-19 05:00:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 136. [2023-11-19 05:00:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 93 states have (on average 1.3870967741935485) internal successors, (129), 93 states have internal predecessors, (129), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 05:00:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 209 transitions. [2023-11-19 05:00:29,000 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 209 transitions. Word has length 140 [2023-11-19 05:00:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:29,002 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 209 transitions. [2023-11-19 05:00:29,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 209 transitions. [2023-11-19 05:00:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 05:00:29,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:29,011 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:29,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-19 05:00:29,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:29,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:29,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:29,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash -476384083, now seen corresponding path program 1 times [2023-11-19 05:00:29,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885047413] [2023-11-19 05:00:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:29,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:29,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:29,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:29,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 05:00:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:29,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:00:29,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 05:00:32,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:33,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:00:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885047413] [2023-11-19 05:00:33,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885047413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:00:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1376266115] [2023-11-19 05:00:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:33,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:33,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:00:33,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:00:33,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-19 05:00:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:33,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:00:33,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 05:00:33,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:33,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1376266115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:33,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:00:33,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-11-19 05:00:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752749014] [2023-11-19 05:00:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:00:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:00:33,965 INFO L87 Difference]: Start difference. First operand 136 states and 209 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:34,562 INFO L93 Difference]: Finished difference Result 394 states and 598 transitions. [2023-11-19 05:00:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:34,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-11-19 05:00:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:34,567 INFO L225 Difference]: With dead ends: 394 [2023-11-19 05:00:34,568 INFO L226 Difference]: Without dead ends: 261 [2023-11-19 05:00:34,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:00:34,572 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 115 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:34,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 311 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:00:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-19 05:00:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 219. [2023-11-19 05:00:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 158 states have (on average 1.3924050632911393) internal successors, (220), 160 states have internal predecessors, (220), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-19 05:00:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 332 transitions. [2023-11-19 05:00:34,623 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 332 transitions. Word has length 140 [2023-11-19 05:00:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:34,624 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 332 transitions. [2023-11-19 05:00:34,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:34,625 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 332 transitions. [2023-11-19 05:00:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 05:00:34,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:34,628 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:34,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:34,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:35,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:35,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:35,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash -23291925, now seen corresponding path program 1 times [2023-11-19 05:00:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196419723] [2023-11-19 05:00:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:35,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:35,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:35,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 05:00:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:35,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:00:35,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 05:00:37,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:38,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:00:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196419723] [2023-11-19 05:00:38,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196419723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:00:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [390193794] [2023-11-19 05:00:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:38,348 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:38,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:00:38,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:00:38,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 05:00:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:39,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:00:39,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 05:00:41,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [390193794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:00:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436160863] [2023-11-19 05:00:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:41,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:41,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:41,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:41,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:00:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:42,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:00:42,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 05:00:43,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:44,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436160863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:00:44,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:00:44,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-11-19 05:00:44,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659472837] [2023-11-19 05:00:44,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:44,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:00:44,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:00:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:00:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:00:44,549 INFO L87 Difference]: Start difference. First operand 219 states and 332 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-19 05:00:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:46,305 INFO L93 Difference]: Finished difference Result 590 states and 888 transitions. [2023-11-19 05:00:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:00:46,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 140 [2023-11-19 05:00:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:46,325 INFO L225 Difference]: With dead ends: 590 [2023-11-19 05:00:46,325 INFO L226 Difference]: Without dead ends: 374 [2023-11-19 05:00:46,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:00:46,328 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 189 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:46,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 366 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 05:00:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-19 05:00:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 266. [2023-11-19 05:00:46,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 182 states have (on average 1.3461538461538463) internal successors, (245), 184 states have internal predecessors, (245), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-19 05:00:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 397 transitions. [2023-11-19 05:00:46,394 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 397 transitions. Word has length 140 [2023-11-19 05:00:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:46,395 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 397 transitions. [2023-11-19 05:00:46,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-19 05:00:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 397 transitions. [2023-11-19 05:00:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 05:00:46,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:46,398 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:46,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-11-19 05:00:46,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:46,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:47,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:47,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:47,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1949564493, now seen corresponding path program 1 times [2023-11-19 05:00:47,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:47,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148086748] [2023-11-19 05:00:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:47,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:47,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:47,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 05:00:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:47,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:00:47,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 343 proven. 39 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-19 05:00:47,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 05:00:47,891 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:00:47,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148086748] [2023-11-19 05:00:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148086748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1286556378] [2023-11-19 05:00:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:47,892 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:47,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:00:47,896 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:00:47,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-19 05:00:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:48,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:00:48,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 05:00:48,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:48,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1286556378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:48,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:48,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 8 [2023-11-19 05:00:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795609027] [2023-11-19 05:00:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:00:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:00:48,312 INFO L87 Difference]: Start difference. First operand 266 states and 397 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:48,705 INFO L93 Difference]: Finished difference Result 617 states and 920 transitions. [2023-11-19 05:00:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:48,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-11-19 05:00:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:48,714 INFO L225 Difference]: With dead ends: 617 [2023-11-19 05:00:48,714 INFO L226 Difference]: Without dead ends: 401 [2023-11-19 05:00:48,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:00:48,722 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 51 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:48,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 243 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:00:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-19 05:00:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395. [2023-11-19 05:00:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 283 states have (on average 1.3568904593639577) internal successors, (384), 289 states have internal predecessors, (384), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 94 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-19 05:00:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 584 transitions. [2023-11-19 05:00:48,802 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 584 transitions. Word has length 140 [2023-11-19 05:00:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:48,803 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 584 transitions. [2023-11-19 05:00:48,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 584 transitions. [2023-11-19 05:00:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 05:00:48,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:48,806 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:48,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-11-19 05:00:49,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:49,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:49,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:49,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1135881719, now seen corresponding path program 1 times [2023-11-19 05:00:49,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:49,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625503134] [2023-11-19 05:00:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:49,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:49,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:49,213 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:49,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 05:00:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:49,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:00:49,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-19 05:00:49,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 05:00:50,044 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:00:50,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625503134] [2023-11-19 05:00:50,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625503134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:50,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2065727223] [2023-11-19 05:00:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:50,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:50,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:00:50,047 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:00:50,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-19 05:00:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:50,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:00:50,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-19 05:00:51,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 05:00:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2065727223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120572632] [2023-11-19 05:00:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:51,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:51,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:51,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:51,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:00:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:51,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:00:51,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-19 05:00:51,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 05:00:52,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120572632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:52,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:00:52,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 5, 5] total 8 [2023-11-19 05:00:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642710119] [2023-11-19 05:00:52,143 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:00:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:00:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:00:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:00:52,146 INFO L87 Difference]: Start difference. First operand 395 states and 584 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 05:00:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:53,489 INFO L93 Difference]: Finished difference Result 744 states and 1081 transitions. [2023-11-19 05:00:53,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 05:00:53,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 141 [2023-11-19 05:00:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:53,497 INFO L225 Difference]: With dead ends: 744 [2023-11-19 05:00:53,497 INFO L226 Difference]: Without dead ends: 399 [2023-11-19 05:00:53,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 832 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:00:53,500 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 162 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:53,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 286 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:00:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-11-19 05:00:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 371. [2023-11-19 05:00:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 262 states have (on average 1.297709923664122) internal successors, (340), 267 states have internal predecessors, (340), 94 states have call successors, (94), 14 states have call predecessors, (94), 14 states have return successors, (94), 89 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 05:00:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 528 transitions. [2023-11-19 05:00:53,581 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 528 transitions. Word has length 141 [2023-11-19 05:00:53,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:53,582 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 528 transitions. [2023-11-19 05:00:53,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 05:00:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 528 transitions. [2023-11-19 05:00:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 05:00:53,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:53,587 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:53,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:53,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:54,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:54,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:54,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:54,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash -99969865, now seen corresponding path program 1 times [2023-11-19 05:00:54,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:54,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39093405] [2023-11-19 05:00:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:54,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:54,199 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:54,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-19 05:00:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:54,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:00:54,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-19 05:00:54,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 05:00:55,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:00:55,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39093405] [2023-11-19 05:00:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39093405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:55,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1754293569] [2023-11-19 05:00:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:55,267 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:55,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:00:55,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:00:55,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-11-19 05:00:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:55,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:55,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 05:00:55,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:55,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1754293569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:55,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:55,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7] total 9 [2023-11-19 05:00:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558539062] [2023-11-19 05:00:55,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:55,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:00:55,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:00:55,673 INFO L87 Difference]: Start difference. First operand 371 states and 528 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:56,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:56,090 INFO L93 Difference]: Finished difference Result 690 states and 986 transitions. [2023-11-19 05:00:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:56,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-11-19 05:00:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:56,096 INFO L225 Difference]: With dead ends: 690 [2023-11-19 05:00:56,097 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 05:00:56,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:00:56,099 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 87 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:56,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 317 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:00:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 05:00:56,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2023-11-19 05:00:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 262 states have (on average 1.282442748091603) internal successors, (336), 267 states have internal predecessors, (336), 94 states have call successors, (94), 14 states have call predecessors, (94), 14 states have return successors, (94), 89 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 05:00:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 524 transitions. [2023-11-19 05:00:56,156 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 524 transitions. Word has length 141 [2023-11-19 05:00:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:56,157 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 524 transitions. [2023-11-19 05:00:56,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 524 transitions. [2023-11-19 05:00:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 05:00:56,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:56,160 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:56,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:56,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:56,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:00:56,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:56,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash -42711563, now seen corresponding path program 1 times [2023-11-19 05:00:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:00:56,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456041452] [2023-11-19 05:00:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:56,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:00:56,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:00:56,571 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:00:56,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7707821-85d1-4bbf-8990-9e0e6530f3b0/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-19 05:00:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:56,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 05:00:56,899 INFO L285 TraceCheckSpWp]: Computing forward predicates...