./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_6.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_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/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_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/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_60af06d2-f11f-45ff-b0e4-337646a57fae/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 cefb3bae89bbacb2fe493d14201bba1802fb381afd861fd412b13151077489a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:55:30,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:55:30,983 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:55:30,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:55:30,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:55:31,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:55:31,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:55:31,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:55:31,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:55:31,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:55:31,078 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:55:31,079 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:55:31,080 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:55:31,083 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:55:31,083 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:55:31,084 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:55:31,085 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:55:31,085 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:55:31,086 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:55:31,087 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:55:31,087 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:55:31,089 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:55:31,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:55:31,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:55:31,092 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:55:31,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:55:31,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:55:31,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:55:31,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:55:31,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:55:31,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:55:31,106 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:55:31,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:55:31,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:55:31,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:55:31,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:55:31,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:31,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:55:31,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:55:31,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:55:31,109 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:55:31,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:55:31,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:55:31,110 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:55:31,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:55:31,110 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_60af06d2-f11f-45ff-b0e4-337646a57fae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cefb3bae89bbacb2fe493d14201bba1802fb381afd861fd412b13151077489a8 [2023-11-19 04:55:31,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:55:31,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:55:31,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:55:31,541 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:55:31,542 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:55:31,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/combinations/gcd_3+newton_3_6.i [2023-11-19 04:55:35,224 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:55:35,488 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:55:35,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i [2023-11-19 04:55:35,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/data/faf4e0245/8a8304fbf4ab4243be7126ae28c35990/FLAGe24aba4a5 [2023-11-19 04:55:35,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/data/faf4e0245/8a8304fbf4ab4243be7126ae28c35990 [2023-11-19 04:55:35,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:55:35,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:55:35,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:35,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:55:35,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:55:35,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:35,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2283cd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35, skipping insertion in model container [2023-11-19 04:55:35,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:35,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:55:35,848 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_60af06d2-f11f-45ff-b0e4-337646a57fae/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[1226,1239] [2023-11-19 04:55:35,918 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_60af06d2-f11f-45ff-b0e4-337646a57fae/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[2862,2875] [2023-11-19 04:55:35,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:35,934 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:55:35,951 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[1226,1239] [2023-11-19 04:55:35,966 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_60af06d2-f11f-45ff-b0e4-337646a57fae/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[2862,2875] [2023-11-19 04:55:35,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:35,988 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:55:35,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35 WrapperNode [2023-11-19 04:55:35,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:35,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:35,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:55:35,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:55:36,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,048 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-19 04:55:36,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:36,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:55:36,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:55:36,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:55:36,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:55:36,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:55:36,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:55:36,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:55:36,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (1/1) ... [2023-11-19 04:55:36,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:36,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:55:36,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:55:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:55:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-19 04:55:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-19 04:55:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-19 04:55:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-19 04:55:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:55:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:55:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:55:36,271 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:55:36,274 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:55:36,599 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:55:36,729 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:55:36,729 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:55:36,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:36 BoogieIcfgContainer [2023-11-19 04:55:36,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:55:36,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:55:36,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:55:36,745 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:55:36,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:55:35" (1/3) ... [2023-11-19 04:55:36,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ae0516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:36, skipping insertion in model container [2023-11-19 04:55:36,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:35" (2/3) ... [2023-11-19 04:55:36,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ae0516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:36, skipping insertion in model container [2023-11-19 04:55:36,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:36" (3/3) ... [2023-11-19 04:55:36,750 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_6.i [2023-11-19 04:55:36,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:55:36,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:55:36,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:55:36,856 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;@4cfac456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:55:36,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:55:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:55:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:55:36,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:36,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:55:36,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:55:36,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash -291944571, now seen corresponding path program 1 times [2023-11-19 04:55:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:36,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499198038] [2023-11-19 04:55:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:36,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:37,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499198038] [2023-11-19 04:55:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499198038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:37,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:37,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:55:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164739167] [2023-11-19 04:55:37,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:37,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:55:37,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:55:37,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:55:37,936 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:38,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:38,134 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-19 04:55:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:55:38,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:55:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:38,147 INFO L225 Difference]: With dead ends: 40 [2023-11-19 04:55:38,148 INFO L226 Difference]: Without dead ends: 24 [2023-11-19 04:55:38,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:55:38,161 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:38,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 83 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-19 04:55:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-19 04:55:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:55:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-19 04:55:38,227 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2023-11-19 04:55:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:38,228 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-19 04:55:38,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-19 04:55:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:55:38,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:38,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:38,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:55:38,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:55:38,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash -533010262, now seen corresponding path program 1 times [2023-11-19 04:55:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:38,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964738712] [2023-11-19 04:55:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:38,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:55:38,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981359860] [2023-11-19 04:55:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:38,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:38,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:38,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:55:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:38,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 04:55:38,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:41,352 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse8 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse0 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0)) (.cse1 (<= .cse2 127)) (.cse7 (<= 128 .cse2)) (.cse6 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse4 (+ .cse2 (- 256))) (.cse3 (= |c_ULTIMATE.start_gcd_test_~b#1| 0))) (or (and .cse0 (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse2 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (and (or (and .cse3 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (= (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (let ((.cse5 (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= .cse5 0)) (= (mod (+ .cse5 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_24|)) 256) .cse6))))) .cse7))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)))) .cse8) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)))) .cse8) (and .cse0 (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse2 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) (and .cse7 (or (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (let ((.cse9 (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (= (mod (+ .cse9 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) .cse6) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)) (not (= .cse9 0))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (= (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0))) .cse3)))))))) is different from true [2023-11-19 04:55:41,798 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse5 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse4 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0)) (.cse0 (<= .cse1 127)) (.cse3 (+ .cse1 (- 256))) (.cse2 (<= 128 .cse1))) (or (and (or (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod .cse1 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (and .cse2 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (= (mod .cse3 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) .cse4) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))) .cse5) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) .cse5) (and .cse4 (or (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod .cse1 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (= (mod .cse3 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0))) .cse2)))))) is different from true [2023-11-19 04:55:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 04:55:41,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:43,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964738712] [2023-11-19 04:55:43,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:55:43,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981359860] [2023-11-19 04:55:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981359860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [454438633] [2023-11-19 04:55:43,376 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:55:43,376 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:55:43,380 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:55:43,386 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:55:43,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:55:45,907 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:55:46,313 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '168#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main1_~x~0#1|) (<= (+ |ULTIMATE.start_main1_~x~0#1| 1) |ULTIMATE.start_main1_~g~0#1|) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= |ULTIMATE.start_main1_~y~0#1| 127) (<= 0 (+ |ULTIMATE.start_main1_~y~0#1| 128)))' at error location [2023-11-19 04:55:46,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:55:46,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:55:46,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 04:55:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416261882] [2023-11-19 04:55:46,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:55:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:55:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=129, Unknown=2, NotChecked=46, Total=210 [2023-11-19 04:55:46,319 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:46,396 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse1 (+ |c_ULTIMATE.start_main1_~x~0#1| 1)) (.cse2 (< |c_ULTIMATE.start_main1_~x~0#1| 1))) (and (or (not .cse0) (< |c_ULTIMATE.start_gcd_test_~a#1| .cse1) .cse2) (let ((.cse5 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse10 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse3 (<= .cse1 0)) (.cse4 (<= .cse5 127)) (.cse9 (<= 128 .cse5)) (.cse8 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse6 (+ .cse5 (- 256)))) (or (and .cse3 (or (and .cse4 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse5 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (and (or (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (= (mod .cse6 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (let ((.cse7 (mod .cse6 |v_ULTIMATE.start_gcd_test_~b#1_24|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= .cse7 0)) (= (mod (+ .cse7 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_24|)) 256) .cse8))))) .cse9))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)))) .cse10) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)))) .cse10) (and .cse3 (or (and .cse4 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse5 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) (and .cse9 (or (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (let ((.cse11 (mod .cse6 |v_ULTIMATE.start_gcd_test_~b#1_24|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (= (mod (+ .cse11 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) .cse8) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)) (not (= .cse11 0))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (= (mod .cse6 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0))) .cse0)))))))) (or (< |c_ULTIMATE.start_gcd_test_~b#1| .cse1) .cse2 (let ((.cse12 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|)) (.cse13 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1))) (and (or (not (= (mod .cse12 256) 0)) (and (<= .cse13 0) (not (= .cse12 0)))) (or (not (= (mod (+ .cse12 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256) 0)) (< 0 .cse13))))))) is different from true [2023-11-19 04:55:46,417 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main1_~x~0#1| 1))) (and (or (< |c_ULTIMATE.start_main1_~g~0#1| .cse0) (< |c_ULTIMATE.start_main1_~x~0#1| 1)) (let ((.cse2 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse6 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse5 (<= .cse0 0)) (.cse1 (<= .cse2 127)) (.cse4 (+ .cse2 (- 256))) (.cse3 (<= 128 .cse2))) (or (and (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod .cse2 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (and .cse3 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (= (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) .cse5) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))) .cse6) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) .cse6) (and .cse5 (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod .cse2 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (= (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0))) .cse3)))))))) is different from true [2023-11-19 04:55:46,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:46,653 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-11-19 04:55:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:55:46,655 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:55:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:46,656 INFO L225 Difference]: With dead ends: 32 [2023-11-19 04:55:46,657 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 04:55:46,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=152, Unknown=4, NotChecked=108, Total=306 [2023-11-19 04:55:46,660 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:46,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 113 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 83 Unchecked, 0.3s Time] [2023-11-19 04:55:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 04:55:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-19 04:55:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:55:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-19 04:55:46,674 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2023-11-19 04:55:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:46,675 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-19 04:55:46,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-19 04:55:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:55:46,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:46,684 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:46,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:46,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:46,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:55:46,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash 847992842, now seen corresponding path program 2 times [2023-11-19 04:55:46,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800015018] [2023-11-19 04:55:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:46,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:46,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:55:46,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431586953] [2023-11-19 04:55:46,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:55:46,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:46,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:46,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:46,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60af06d2-f11f-45ff-b0e4-337646a57fae/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:55:47,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 04:55:47,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:55:47,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-19 04:55:47,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:02,912 WARN L293 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 97 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)