./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.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_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0facbc53e01d120e629a50b5211a29fd2bc23d2bc5e324a9623e8d1b2c65da11 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:35,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:35,204 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:35,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:35,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:35,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:35,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:35,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:35,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:35,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:35,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:35,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:35,237 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:35,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:35,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:35,239 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:35,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:35,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:35,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:35,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:35,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:35,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:35,243 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:35,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:35,245 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:35,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:35,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:35,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:35,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:35,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:35,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:35,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:35,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:35,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:35,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:35,250 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:35,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:35,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:35,251 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:35,252 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0facbc53e01d120e629a50b5211a29fd2bc23d2bc5e324a9623e8d1b2c65da11 [2023-11-19 07:59:35,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:35,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:35,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:35,588 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:35,588 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:35,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i [2023-11-19 07:59:38,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:39,033 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:39,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i [2023-11-19 07:59:39,045 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/data/69ca6be0f/d4503e2b1e164b46ab04175bca329c15/FLAG3b3b955bb [2023-11-19 07:59:39,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/data/69ca6be0f/d4503e2b1e164b46ab04175bca329c15 [2023-11-19 07:59:39,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:39,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:39,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:39,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:39,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:39,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec0c099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39, skipping insertion in model container [2023-11-19 07:59:39,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,147 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:39,335 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_b4e17dce-16cf-4506-9f24-73864a16ff8c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i[916,929] [2023-11-19 07:59:39,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:39,453 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:39,472 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_b4e17dce-16cf-4506-9f24-73864a16ff8c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i[916,929] [2023-11-19 07:59:39,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:39,542 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:39,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39 WrapperNode [2023-11-19 07:59:39,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:39,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:39,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:39,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:39,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,655 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 258 [2023-11-19 07:59:39,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:39,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:39,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:39,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:39,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:39,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:39,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:39,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:39,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:39,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:39,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:39,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:59:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:59:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:39,993 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:39,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:40,713 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:40,729 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:40,729 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:59:40,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:40 BoogieIcfgContainer [2023-11-19 07:59:40,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:40,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:40,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:40,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:40,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:39" (1/3) ... [2023-11-19 07:59:40,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba7c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:40, skipping insertion in model container [2023-11-19 07:59:40,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39" (2/3) ... [2023-11-19 07:59:40,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba7c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:40, skipping insertion in model container [2023-11-19 07:59:40,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:40" (3/3) ... [2023-11-19 07:59:40,752 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-31.i [2023-11-19 07:59:40,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:40,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:59:40,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:40,861 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=PETRI_NET, 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;@20432260, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:40,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:59:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 75 states have internal predecessors, (110), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:59:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-19 07:59:40,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:40,896 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:40,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:40,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:40,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1465335882, now seen corresponding path program 1 times [2023-11-19 07:59:40,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:40,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424041036] [2023-11-19 07:59:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:40,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424041036] [2023-11-19 07:59:41,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:59:41,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348764017] [2023-11-19 07:59:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:41,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:41,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:41,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:59:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:41,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:59:41,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-19 07:59:41,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348764017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:41,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:41,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741645715] [2023-11-19 07:59:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:59:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:41,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:59:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:59:41,667 INFO L87 Difference]: Start difference. First operand has 103 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 75 states have internal predecessors, (110), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 07:59:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:41,704 INFO L93 Difference]: Finished difference Result 195 states and 334 transitions. [2023-11-19 07:59:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:59:41,706 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2023-11-19 07:59:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:41,715 INFO L225 Difference]: With dead ends: 195 [2023-11-19 07:59:41,716 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 07:59:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 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 07:59:41,723 INFO L413 NwaCegarLoop]: 145 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, 145 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 07:59:41,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 07:59:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-19 07:59:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:59:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 141 transitions. [2023-11-19 07:59:41,778 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 141 transitions. Word has length 172 [2023-11-19 07:59:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:41,779 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 141 transitions. [2023-11-19 07:59:41,779 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 07:59:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 141 transitions. [2023-11-19 07:59:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-19 07:59:41,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:41,785 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:41,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:59:42,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:42,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash 203687934, now seen corresponding path program 1 times [2023-11-19 07:59:42,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:42,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761817368] [2023-11-19 07:59:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:42,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:42,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:42,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491475855] [2023-11-19 07:59:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:42,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:42,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:42,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:42,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:59:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:42,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:42,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:59:42,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:42,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:42,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761817368] [2023-11-19 07:59:42,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:42,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491475855] [2023-11-19 07:59:42,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491475855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:42,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:42,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:42,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762836055] [2023-11-19 07:59:42,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:42,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:42,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:42,817 INFO L87 Difference]: Start difference. First operand 91 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:59:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:43,035 INFO L93 Difference]: Finished difference Result 268 states and 418 transitions. [2023-11-19 07:59:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 172 [2023-11-19 07:59:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:43,041 INFO L225 Difference]: With dead ends: 268 [2023-11-19 07:59:43,041 INFO L226 Difference]: Without dead ends: 180 [2023-11-19 07:59:43,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:43,044 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 86 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 384 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-19 07:59:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2023-11-19 07:59:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 96 states have internal predecessors, (131), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 07:59:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 235 transitions. [2023-11-19 07:59:43,096 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 235 transitions. Word has length 172 [2023-11-19 07:59:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:43,097 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 235 transitions. [2023-11-19 07:59:43,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:59:43,097 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 235 transitions. [2023-11-19 07:59:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-19 07:59:43,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:43,100 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:43,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:43,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:43,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:43,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1669563669, now seen corresponding path program 1 times [2023-11-19 07:59:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:43,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934611552] [2023-11-19 07:59:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:43,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:43,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:43,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242678047] [2023-11-19 07:59:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:43,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:43,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:43,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:43,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:59:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:43,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:59:43,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 637 proven. 90 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-11-19 07:59:43,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 07:59:44,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:44,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934611552] [2023-11-19 07:59:44,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:44,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242678047] [2023-11-19 07:59:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242678047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:44,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2023-11-19 07:59:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614632608] [2023-11-19 07:59:44,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:44,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:59:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:44,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:59:44,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:59:44,221 INFO L87 Difference]: Start difference. First operand 151 states and 235 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2023-11-19 07:59:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:45,566 INFO L93 Difference]: Finished difference Result 469 states and 697 transitions. [2023-11-19 07:59:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-19 07:59:45,567 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 173 [2023-11-19 07:59:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:45,571 INFO L225 Difference]: With dead ends: 469 [2023-11-19 07:59:45,572 INFO L226 Difference]: Without dead ends: 378 [2023-11-19 07:59:45,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 334 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2023-11-19 07:59:45,575 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 318 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:45,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 969 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:59:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-19 07:59:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 188. [2023-11-19 07:59:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 129 states have internal predecessors, (173), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 07:59:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 277 transitions. [2023-11-19 07:59:45,652 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 277 transitions. Word has length 173 [2023-11-19 07:59:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:45,655 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 277 transitions. [2023-11-19 07:59:45,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2023-11-19 07:59:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 277 transitions. [2023-11-19 07:59:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 07:59:45,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:45,667 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:45,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:45,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:45,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:45,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash 696599774, now seen corresponding path program 1 times [2023-11-19 07:59:45,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:45,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114925641] [2023-11-19 07:59:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:45,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:45,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650779930] [2023-11-19 07:59:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:45,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:45,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:45,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:59:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:46,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:46,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:59:46,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:46,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114925641] [2023-11-19 07:59:46,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650779930] [2023-11-19 07:59:46,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650779930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:46,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:46,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:46,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933277843] [2023-11-19 07:59:46,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:46,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:46,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:46,376 INFO L87 Difference]: Start difference. First operand 188 states and 277 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:59:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:46,543 INFO L93 Difference]: Finished difference Result 353 states and 523 transitions. [2023-11-19 07:59:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:46,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2023-11-19 07:59:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:46,551 INFO L225 Difference]: With dead ends: 353 [2023-11-19 07:59:46,551 INFO L226 Difference]: Without dead ends: 225 [2023-11-19 07:59:46,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:46,556 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 86 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:46,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 391 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-19 07:59:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 187. [2023-11-19 07:59:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.3125) internal successors, (168), 128 states have internal predecessors, (168), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 07:59:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 272 transitions. [2023-11-19 07:59:46,599 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 272 transitions. Word has length 174 [2023-11-19 07:59:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:46,602 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 272 transitions. [2023-11-19 07:59:46,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:59:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 272 transitions. [2023-11-19 07:59:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 07:59:46,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:46,606 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:46,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:46,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:46,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:46,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash -267492378, now seen corresponding path program 1 times [2023-11-19 07:59:46,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:46,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625050343] [2023-11-19 07:59:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:46,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:46,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:46,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704270026] [2023-11-19 07:59:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:46,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:46,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:46,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:59:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:47,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:59:47,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:59:48,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:48,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625050343] [2023-11-19 07:59:48,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704270026] [2023-11-19 07:59:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704270026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:48,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:48,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629261] [2023-11-19 07:59:48,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:48,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:48,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:48,039 INFO L87 Difference]: Start difference. First operand 187 states and 272 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:59:48,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:48,612 INFO L93 Difference]: Finished difference Result 404 states and 580 transitions. [2023-11-19 07:59:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:59:48,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2023-11-19 07:59:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:48,617 INFO L225 Difference]: With dead ends: 404 [2023-11-19 07:59:48,617 INFO L226 Difference]: Without dead ends: 293 [2023-11-19 07:59:48,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:59:48,619 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 172 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:48,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 660 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:59:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-19 07:59:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 260. [2023-11-19 07:59:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 190 states have (on average 1.3263157894736841) internal successors, (252), 192 states have internal predecessors, (252), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-19 07:59:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 372 transitions. [2023-11-19 07:59:48,672 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 372 transitions. Word has length 174 [2023-11-19 07:59:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:48,673 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 372 transitions. [2023-11-19 07:59:48,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:59:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 372 transitions. [2023-11-19 07:59:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 07:59:48,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:48,676 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:48,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 07:59:48,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:48,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:48,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash 412565992, now seen corresponding path program 1 times [2023-11-19 07:59:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:48,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023412360] [2023-11-19 07:59:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:48,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:48,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929082639] [2023-11-19 07:59:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:48,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:48,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:48,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:59:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:49,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:59:49,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 629 proven. 99 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2023-11-19 07:59:50,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:53,063 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (mod c_~var_1_13~0 256)) (.cse21 (mod c_~var_1_1~0 256))) (let ((.cse15 (= .cse21 1)) (.cse2 (= (mod c_~var_1_24~0 256) 0)) (.cse19 (mod c_~var_1_6~0 256)) (.cse12 (mod c_~var_1_15~0 65536)) (.cse17 (+ .cse10 1)) (.cse20 (mod c_~var_1_7~0 256)) (.cse6 (= (mod c_~var_1_12~0 256) 0)) (.cse5 (= 0 (mod c_~var_1_11~0 256)))) (let ((.cse0 (not .cse5)) (.cse1 (not .cse6)) (.cse3 (= .cse20 1)) (.cse8 (forall ((v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod (mod .cse10 v_z_6) 4294967296) .cse12) (< v_z_6 .cse17)))) (.cse14 (= .cse19 .cse21)) (.cse4 (= .cse20 0)) (.cse16 (not .cse2)) (.cse13 (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (< .cse12 (+ (mod (mod .cse10 v_z_5) 4294967296) 1)) (< v_z_5 0)))) (.cse11 (+ .cse19 .cse12)) (.cse7 (= .cse19 1)) (.cse9 (not .cse15))) (and (or (and (or (and .cse0 .cse1 .cse2) (not .cse3)) (or (and .cse4 (or .cse5 .cse6) .cse2) .cse3)) (not (= (mod c_~var_1_10~0 256) 0))) (or .cse7 .cse8 .cse9 .cse2) (or (and (or (< .cse10 .cse11) (forall ((v_z_5 Int)) (or (< .cse12 (+ (mod (mod .cse10 v_z_5) 4294967296) 1)) (< v_z_5 0)))) (or .cse13 .cse14)) .cse15) (or .cse4 (and .cse0 .cse1 .cse3 .cse2)) (or .cse8 .cse2 .cse15 .cse14) (or .cse5 .cse6 .cse16 (not .cse4)) (or (let ((.cse18 (< .cse11 .cse17))) (and (or (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (< .cse12 (+ (mod (mod .cse10 v_z_5) 4294967296) 1)) (< v_z_5 .cse17))) .cse18 .cse2) (or .cse18 (and (or .cse16 .cse13) (forall ((v_z_5 Int)) (or (< .cse12 (+ (mod (mod .cse10 v_z_5) 4294967296) 1)) (< .cse10 v_z_5) (< v_z_5 0))))))) .cse7 .cse9))))) is different from false [2023-11-19 07:59:55,636 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_13~0 256)) (.cse18 (mod c_~var_1_1~0 256))) (let ((.cse9 (= .cse18 1)) (.cse0 (= (mod c_~var_1_24~0 256) 0)) (.cse13 (mod c_~var_1_7~0 256)) (.cse17 (mod c_~var_1_6~0 256)) (.cse6 (mod c_~var_1_15~0 65536)) (.cse15 (+ .cse4 1))) (let ((.cse2 (forall ((v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod (mod .cse4 v_z_6) 4294967296) .cse6) (< v_z_6 .cse15)))) (.cse8 (= .cse17 .cse18)) (.cse11 (= 0 (mod c_~var_1_11~0 256))) (.cse12 (= (mod c_~var_1_12~0 256) 0)) (.cse10 (= .cse13 0)) (.cse14 (not .cse0)) (.cse7 (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (< .cse6 (+ (mod (mod .cse4 v_z_5) 4294967296) 1)) (< v_z_5 0)))) (.cse5 (+ .cse17 .cse6)) (.cse1 (= .cse17 1)) (.cse3 (not .cse9))) (and (or (not (= (mod c_~var_1_10~0 256) 0)) .cse0) (or .cse1 .cse2 .cse3 .cse0) (or (and (or (< .cse4 .cse5) (forall ((v_z_5 Int)) (or (< .cse6 (+ (mod (mod .cse4 v_z_5) 4294967296) 1)) (< v_z_5 0)))) (or .cse7 .cse8)) .cse9) (or .cse10 (and (not .cse11) (not .cse12) (= .cse13 1) .cse0)) (or .cse2 .cse0 .cse9 .cse8) (or .cse11 .cse12 .cse14 (not .cse10)) (or (let ((.cse16 (< .cse5 .cse15))) (and (or (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (< .cse6 (+ (mod (mod .cse4 v_z_5) 4294967296) 1)) (< v_z_5 .cse15))) .cse16 .cse0) (or .cse16 (and (or .cse14 .cse7) (forall ((v_z_5 Int)) (or (< .cse6 (+ (mod (mod .cse4 v_z_5) 4294967296) 1)) (< .cse4 v_z_5) (< v_z_5 0))))))) .cse1 .cse3))))) is different from false [2023-11-19 07:59:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:59:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023412360] [2023-11-19 07:59:59,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929082639] [2023-11-19 07:59:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929082639] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:59,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 19 [2023-11-19 07:59:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734588297] [2023-11-19 07:59:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:59,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:59,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:59,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=213, Unknown=2, NotChecked=62, Total=342 [2023-11-19 07:59:59,277 INFO L87 Difference]: Start difference. First operand 260 states and 372 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:00:03,182 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse13 (= (mod c_~var_1_12~0 256) 0)) (.cse12 (= 0 (mod c_~var_1_11~0 256))) (.cse6 (mod c_~var_1_13~0 256)) (.cse25 (mod c_~var_1_7~0 256)) (.cse24 (mod c_~var_1_1~0 256))) (let ((.cse11 (= .cse24 1)) (.cse16 (= .cse25 0)) (.cse23 (mod c_~var_1_6~0 256)) (.cse8 (mod c_~var_1_15~0 65536)) (.cse21 (+ .cse6 1)) (.cse18 (not .cse12)) (.cse19 (not .cse13)) (.cse20 (= .cse25 1)) (.cse1 (= (mod c_~var_1_24~0 256) 0))) (let ((.cse0 (not (= (mod c_~var_1_10~0 256) 0))) (.cse2 (< 255 |c_ULTIMATE.start_step_~stepLocal_1~0#1|)) (.cse17 (and .cse18 .cse19 .cse20 .cse1)) (.cse4 (forall ((v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod (mod .cse6 v_z_6) 4294967296) .cse8) (< v_z_6 .cse21)))) (.cse10 (= .cse23 .cse24)) (.cse15 (not .cse16)) (.cse14 (not .cse1)) (.cse9 (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (< .cse8 (+ (mod (mod .cse6 v_z_5) 4294967296) 1)) (< v_z_5 0)))) (.cse7 (+ .cse23 .cse8)) (.cse3 (= .cse23 1)) (.cse5 (not .cse11))) (and (or .cse0 .cse1) (or .cse0 .cse2 .cse1) (or .cse3 .cse4 .cse5 .cse1) (or (and (or (< .cse6 .cse7) (forall ((v_z_5 Int)) (or (< .cse8 (+ (mod (mod .cse6 v_z_5) 4294967296) 1)) (< v_z_5 0)))) (or .cse9 .cse10)) .cse11) (or .cse12 .cse2 .cse13 .cse14 .cse15) (or .cse16 .cse2 .cse17) (or .cse16 .cse17) (or .cse3 (forall ((v_z_7 Int) (v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod (mod v_z_7 v_z_6) 4294967296) .cse8) (< 255 v_z_7) (< v_z_7 0) (< v_z_7 |c_ULTIMATE.start_step_~stepLocal_1~0#1|) (< v_z_6 (+ v_z_7 1)))) .cse1) (or (and (or .cse14 (forall ((v_z_5 Int) (v_z_7 Int)) (or (< 4294967295 v_z_5) (< 255 v_z_7) (< v_z_7 0) (< .cse7 (+ v_z_7 1)) (< .cse8 (+ (mod (mod v_z_7 v_z_5) 4294967296) 1)) (< v_z_7 |c_ULTIMATE.start_step_~stepLocal_1~0#1|) (< v_z_5 0)))) (or (forall ((v_z_5 Int) (v_z_7 Int)) (or (< 4294967295 v_z_5) (< 255 v_z_7) (< v_z_7 0) (< .cse8 (+ (mod (mod v_z_7 v_z_5) 4294967296) 1)) (< v_z_5 (+ v_z_7 1)) (< v_z_7 |c_ULTIMATE.start_step_~stepLocal_1~0#1|))) .cse1) (forall ((v_z_7 Int)) (or (< 255 v_z_7) (< .cse7 (+ v_z_7 1)) (< v_z_7 |c_ULTIMATE.start_step_~stepLocal_1~0#1|) (forall ((v_z_5 Int)) (or (< .cse8 (+ (mod (mod v_z_7 v_z_5) 4294967296) 1)) (< v_z_5 0) (< v_z_7 v_z_5)))))) .cse3) (or .cse4 .cse1 .cse11 .cse10) (or .cse16 (and .cse18 .cse19 .cse20)) .cse1 (or .cse12 .cse13 .cse14 .cse15) (or .cse12 .cse13 .cse15) (or (let ((.cse22 (< .cse7 .cse21))) (and (or (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (< .cse8 (+ (mod (mod .cse6 v_z_5) 4294967296) 1)) (< v_z_5 .cse21))) .cse22 .cse1) (or .cse22 (and (or .cse14 .cse9) (forall ((v_z_5 Int)) (or (< .cse8 (+ (mod (mod .cse6 v_z_5) 4294967296) 1)) (< .cse6 v_z_5) (< v_z_5 0))))))) .cse3 .cse5))))) is different from false [2023-11-19 08:00:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:04,066 INFO L93 Difference]: Finished difference Result 526 states and 761 transitions. [2023-11-19 08:00:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:00:04,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2023-11-19 08:00:04,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:04,072 INFO L225 Difference]: With dead ends: 526 [2023-11-19 08:00:04,072 INFO L226 Difference]: Without dead ends: 349 [2023-11-19 08:00:04,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=78, Invalid=273, Unknown=3, NotChecked=108, Total=462 [2023-11-19 08:00:04,074 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 114 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 397 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:04,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 720 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 249 Invalid, 6 Unknown, 397 Unchecked, 2.2s Time] [2023-11-19 08:00:04,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-19 08:00:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 299. [2023-11-19 08:00:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 219 states have (on average 1.3150684931506849) internal successors, (288), 222 states have internal predecessors, (288), 67 states have call successors, (67), 12 states have call predecessors, (67), 12 states have return successors, (67), 64 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-19 08:00:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 422 transitions. [2023-11-19 08:00:04,121 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 422 transitions. Word has length 174 [2023-11-19 08:00:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,122 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 422 transitions. [2023-11-19 08:00:04,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:00:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 422 transitions. [2023-11-19 08:00:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 08:00:04,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,125 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:04,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:04,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:00:04,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:04,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash -396780634, now seen corresponding path program 1 times [2023-11-19 08:00:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450215547] [2023-11-19 08:00:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:04,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930744253] [2023-11-19 08:00:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:04,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:04,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:04,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:00:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 08:00:04,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 629 proven. 99 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2023-11-19 08:00:06,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:10,022 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse21 (mod c_~var_1_1~0 256)) (.cse11 (mod c_~var_1_13~0 256))) (let ((.cse2 (= (mod c_~var_1_24~0 256) 0)) (.cse18 (+ .cse11 1)) (.cse10 (= .cse21 1)) (.cse20 (mod c_~var_1_6~0 256)) (.cse13 (mod c_~var_1_15~0 65536)) (.cse19 (mod c_~var_1_7~0 256)) (.cse6 (= (mod c_~var_1_12~0 256) 0)) (.cse5 (= 0 (mod c_~var_1_11~0 256)))) (let ((.cse0 (not .cse5)) (.cse1 (not .cse6)) (.cse3 (= .cse19 1)) (.cse14 (forall ((v_z_23 Int)) (or (< .cse13 (+ (mod (mod .cse11 v_z_23) 4294967296) 1)) (< v_z_23 0) (< 4294967295 v_z_23)))) (.cse12 (+ .cse20 .cse13)) (.cse7 (= .cse20 1)) (.cse9 (not .cse10)) (.cse8 (forall ((v_z_24 Int)) (or (< (mod (mod .cse11 v_z_24) 4294967296) .cse13) (< 4294967295 v_z_24) (< v_z_24 .cse18)))) (.cse15 (= .cse20 .cse21)) (.cse17 (not .cse2)) (.cse4 (= .cse19 0))) (and (or (and (or (and .cse0 .cse1 .cse2) (not .cse3)) (or (and .cse4 (or .cse5 .cse6) .cse2) .cse3)) (not (= (mod c_~var_1_10~0 256) 0))) (or .cse4 (and .cse0 .cse1 .cse3 .cse2)) (or .cse7 .cse8 .cse9 .cse2) (or .cse10 (and (or (< .cse11 .cse12) (forall ((v_z_23 Int)) (or (< .cse13 (+ (mod (mod .cse11 v_z_23) 4294967296) 1)) (< v_z_23 0)))) (or .cse14 .cse15))) (or (let ((.cse16 (< .cse12 .cse18))) (and (or .cse16 (and (forall ((v_z_23 Int)) (or (< .cse13 (+ (mod (mod .cse11 v_z_23) 4294967296) 1)) (< v_z_23 0) (< .cse11 v_z_23))) (or .cse17 .cse14))) (or (forall ((v_z_23 Int)) (or (< .cse13 (+ (mod (mod .cse11 v_z_23) 4294967296) 1)) (< v_z_23 .cse18) (< 4294967295 v_z_23))) .cse16 .cse2))) .cse7 .cse9) (or .cse8 .cse2 .cse10 .cse15) (or .cse5 .cse6 .cse17 (not .cse4)))))) is different from false [2023-11-19 08:00:12,735 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse18 (mod c_~var_1_1~0 256)) (.cse9 (mod c_~var_1_13~0 256))) (let ((.cse4 (mod c_~var_1_7~0 256)) (.cse0 (= (mod c_~var_1_24~0 256) 0)) (.cse16 (+ .cse9 1)) (.cse8 (= .cse18 1)) (.cse17 (mod c_~var_1_6~0 256)) (.cse11 (mod c_~var_1_15~0 65536))) (let ((.cse12 (forall ((v_z_23 Int)) (or (< .cse11 (+ (mod (mod .cse9 v_z_23) 4294967296) 1)) (< v_z_23 0) (< 4294967295 v_z_23)))) (.cse10 (+ .cse17 .cse11)) (.cse5 (= .cse17 1)) (.cse7 (not .cse8)) (.cse6 (forall ((v_z_24 Int)) (or (< (mod (mod .cse9 v_z_24) 4294967296) .cse11) (< 4294967295 v_z_24) (< v_z_24 .cse16)))) (.cse13 (= .cse17 .cse18)) (.cse2 (= 0 (mod c_~var_1_11~0 256))) (.cse3 (= (mod c_~var_1_12~0 256) 0)) (.cse15 (not .cse0)) (.cse1 (= .cse4 0))) (and (or (not (= (mod c_~var_1_10~0 256) 0)) .cse0) (or .cse1 (and (not .cse2) (not .cse3) (= .cse4 1) .cse0)) (or .cse5 .cse6 .cse7 .cse0) (or .cse8 (and (or (< .cse9 .cse10) (forall ((v_z_23 Int)) (or (< .cse11 (+ (mod (mod .cse9 v_z_23) 4294967296) 1)) (< v_z_23 0)))) (or .cse12 .cse13))) (or (let ((.cse14 (< .cse10 .cse16))) (and (or .cse14 (and (forall ((v_z_23 Int)) (or (< .cse11 (+ (mod (mod .cse9 v_z_23) 4294967296) 1)) (< v_z_23 0) (< .cse9 v_z_23))) (or .cse15 .cse12))) (or (forall ((v_z_23 Int)) (or (< .cse11 (+ (mod (mod .cse9 v_z_23) 4294967296) 1)) (< v_z_23 .cse16) (< 4294967295 v_z_23))) .cse14 .cse0))) .cse5 .cse7) (or .cse6 .cse0 .cse8 .cse13) (or .cse2 .cse3 .cse15 (not .cse1)))))) is different from false [2023-11-19 08:00:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:00:15,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450215547] [2023-11-19 08:00:15,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930744253] [2023-11-19 08:00:15,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930744253] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:15,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:15,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 19 [2023-11-19 08:00:15,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484164569] [2023-11-19 08:00:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:15,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:00:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:00:15,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=213, Unknown=2, NotChecked=62, Total=342 [2023-11-19 08:00:15,981 INFO L87 Difference]: Start difference. First operand 299 states and 422 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:00:19,749 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (= (mod c_~var_1_12~0 256) 0)) (.cse3 (= 0 (mod c_~var_1_11~0 256))) (.cse24 (mod c_~var_1_1~0 256)) (.cse18 (mod c_~var_1_13~0 256)) (.cse25 (mod c_~var_1_7~0 256))) (let ((.cse7 (= .cse25 0)) (.cse22 (+ .cse18 1)) (.cse17 (= .cse24 1)) (.cse23 (mod c_~var_1_6~0 256)) (.cse10 (mod c_~var_1_15~0 65536)) (.cse14 (not .cse3)) (.cse15 (not .cse4)) (.cse16 (= .cse25 1)) (.cse1 (= (mod c_~var_1_24~0 256) 0))) (let ((.cse0 (not (= (mod c_~var_1_10~0 256) 0))) (.cse2 (< 255 |c_ULTIMATE.start_step_~stepLocal_1~0#1|)) (.cse8 (and .cse14 .cse15 .cse16 .cse1)) (.cse19 (forall ((v_z_23 Int)) (or (< .cse10 (+ (mod (mod .cse18 v_z_23) 4294967296) 1)) (< v_z_23 0) (< 4294967295 v_z_23)))) (.cse13 (+ .cse23 .cse10)) (.cse9 (= .cse23 1)) (.cse12 (not .cse17)) (.cse11 (forall ((v_z_24 Int)) (or (< (mod (mod .cse18 v_z_24) 4294967296) .cse10) (< 4294967295 v_z_24) (< v_z_24 .cse22)))) (.cse20 (= .cse23 .cse24)) (.cse5 (not .cse1)) (.cse6 (not .cse7))) (and (or .cse0 .cse1) (or .cse0 .cse2 .cse1) (or .cse3 .cse2 .cse4 .cse5 .cse6) (or .cse7 .cse2 .cse8) (or .cse9 (forall ((v_z_25 Int) (v_z_24 Int)) (or (< v_z_25 |c_ULTIMATE.start_step_~stepLocal_1~0#1|) (< (mod (mod v_z_25 v_z_24) 4294967296) .cse10) (< 4294967295 v_z_24) (< v_z_24 (+ v_z_25 1)) (< 255 v_z_25) (< v_z_25 0))) .cse1) (or .cse7 .cse8) (or .cse9 .cse11 .cse12 .cse1) (or .cse9 (and (or (forall ((v_z_25 Int) (v_z_23 Int)) (or (< v_z_23 (+ v_z_25 1)) (< v_z_25 |c_ULTIMATE.start_step_~stepLocal_1~0#1|) (< .cse10 (+ (mod (mod v_z_25 v_z_23) 4294967296) 1)) (< 4294967295 v_z_23) (< 255 v_z_25) (< v_z_25 0))) .cse1) (forall ((v_z_25 Int)) (or (< .cse13 (+ v_z_25 1)) (< v_z_25 |c_ULTIMATE.start_step_~stepLocal_1~0#1|) (< 255 v_z_25) (forall ((v_z_23 Int)) (or (< v_z_23 0) (< .cse10 (+ (mod (mod v_z_25 v_z_23) 4294967296) 1)) (< v_z_25 v_z_23))))) (or (forall ((v_z_25 Int) (v_z_23 Int)) (or (< .cse13 (+ v_z_25 1)) (< v_z_23 0) (< v_z_25 |c_ULTIMATE.start_step_~stepLocal_1~0#1|) (< .cse10 (+ (mod (mod v_z_25 v_z_23) 4294967296) 1)) (< 4294967295 v_z_23) (< 255 v_z_25) (< v_z_25 0))) .cse5))) (or .cse7 (and .cse14 .cse15 .cse16)) (or .cse17 (and (or (< .cse18 .cse13) (forall ((v_z_23 Int)) (or (< .cse10 (+ (mod (mod .cse18 v_z_23) 4294967296) 1)) (< v_z_23 0)))) (or .cse19 .cse20))) .cse1 (or (let ((.cse21 (< .cse13 .cse22))) (and (or .cse21 (and (forall ((v_z_23 Int)) (or (< .cse10 (+ (mod (mod .cse18 v_z_23) 4294967296) 1)) (< v_z_23 0) (< .cse18 v_z_23))) (or .cse5 .cse19))) (or (forall ((v_z_23 Int)) (or (< .cse10 (+ (mod (mod .cse18 v_z_23) 4294967296) 1)) (< v_z_23 .cse22) (< 4294967295 v_z_23))) .cse21 .cse1))) .cse9 .cse12) (or .cse11 .cse1 .cse17 .cse20) (or .cse3 .cse4 .cse5 .cse6) (or .cse3 .cse4 .cse6))))) is different from false [2023-11-19 08:00:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:20,461 INFO L93 Difference]: Finished difference Result 563 states and 810 transitions. [2023-11-19 08:00:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:00:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2023-11-19 08:00:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:20,467 INFO L225 Difference]: With dead ends: 563 [2023-11-19 08:00:20,467 INFO L226 Difference]: Without dead ends: 351 [2023-11-19 08:00:20,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=78, Invalid=273, Unknown=3, NotChecked=108, Total=462 [2023-11-19 08:00:20,470 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 148 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 33 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 397 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:20,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 633 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 209 Invalid, 5 Unknown, 397 Unchecked, 1.9s Time] [2023-11-19 08:00:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-19 08:00:20,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 299. [2023-11-19 08:00:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 219 states have (on average 1.3150684931506849) internal successors, (288), 222 states have internal predecessors, (288), 67 states have call successors, (67), 12 states have call predecessors, (67), 12 states have return successors, (67), 64 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-19 08:00:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 422 transitions. [2023-11-19 08:00:20,518 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 422 transitions. Word has length 174 [2023-11-19 08:00:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:20,519 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 422 transitions. [2023-11-19 08:00:20,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:00:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 422 transitions. [2023-11-19 08:00:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 08:00:20,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:20,522 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:20,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 08:00:20,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:00:20,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:20,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash -735559448, now seen corresponding path program 1 times [2023-11-19 08:00:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806948169] [2023-11-19 08:00:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:20,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:20,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246737489] [2023-11-19 08:00:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:20,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:20,770 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:20,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:00:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:00:20,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:00:22,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:22,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:22,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806948169] [2023-11-19 08:00:22,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:22,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246737489] [2023-11-19 08:00:22,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246737489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:22,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:22,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:00:22,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953716192] [2023-11-19 08:00:22,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:22,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:00:22,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:00:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:00:22,437 INFO L87 Difference]: Start difference. First operand 299 states and 422 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:00:24,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:24,229 INFO L93 Difference]: Finished difference Result 541 states and 764 transitions. [2023-11-19 08:00:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:00:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2023-11-19 08:00:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:24,234 INFO L225 Difference]: With dead ends: 541 [2023-11-19 08:00:24,234 INFO L226 Difference]: Without dead ends: 329 [2023-11-19 08:00:24,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:00:24,239 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 186 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:24,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 570 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:00:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-19 08:00:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 299. [2023-11-19 08:00:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 219 states have (on average 1.3105022831050228) internal successors, (287), 222 states have internal predecessors, (287), 67 states have call successors, (67), 12 states have call predecessors, (67), 12 states have return successors, (67), 64 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-19 08:00:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 421 transitions. [2023-11-19 08:00:24,294 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 421 transitions. Word has length 174 [2023-11-19 08:00:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:24,295 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 421 transitions. [2023-11-19 08:00:24,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:00:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 421 transitions. [2023-11-19 08:00:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 08:00:24,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:24,298 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:24,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:24,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:24,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:24,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash -37120059, now seen corresponding path program 1 times [2023-11-19 08:00:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:24,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724181099] [2023-11-19 08:00:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:24,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:24,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039648885] [2023-11-19 08:00:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:24,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:24,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:24,541 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:24,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e17dce-16cf-4506-9f24-73864a16ff8c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:00:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:24,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 08:00:24,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 629 proven. 99 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2023-11-19 08:00:27,487 INFO L327 TraceCheckSpWp]: Computing backward predicates...