./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/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_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/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_30a8363e-6553-410b-8d2d-2f554403f0a5/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 f2efa9b016e36d6500f21a2db4c7a6e3942b0edb0fcee493e02233de42bdfd34 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:36,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:36,133 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:38:36,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:36,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:36,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:36,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:36,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:36,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:36,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:36,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:36,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:36,174 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:36,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:36,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:36,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:36,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:36,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:36,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:36,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:36,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:36,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:36,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:36,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:36,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:36,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:36,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:36,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:36,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:36,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:36,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:36,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:36,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:36,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:36,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:36,185 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:36,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:36,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:36,186 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:36,187 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_30a8363e-6553-410b-8d2d-2f554403f0a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2efa9b016e36d6500f21a2db4c7a6e3942b0edb0fcee493e02233de42bdfd34 [2023-11-19 07:38:36,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:36,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:36,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:36,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:36,519 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:36,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i [2023-11-19 07:38:39,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:40,007 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:40,008 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i [2023-11-19 07:38:40,033 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/data/3c4e575c6/5ab0f08b601d4a85b5c4353e5ff9d834/FLAGb97570ff4 [2023-11-19 07:38:40,048 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/data/3c4e575c6/5ab0f08b601d4a85b5c4353e5ff9d834 [2023-11-19 07:38:40,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:40,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:40,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:40,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:40,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:40,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239e5532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40, skipping insertion in model container [2023-11-19 07:38:40,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,099 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:40,256 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_30a8363e-6553-410b-8d2d-2f554403f0a5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i[919,932] [2023-11-19 07:38:40,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:40,381 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:40,394 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_30a8363e-6553-410b-8d2d-2f554403f0a5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i[919,932] [2023-11-19 07:38:40,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:40,464 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:40,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40 WrapperNode [2023-11-19 07:38:40,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:40,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:40,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:40,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:40,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,565 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-19 07:38:40,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:40,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:40,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:40,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:40,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:40,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:40,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:40,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:40,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (1/1) ... [2023-11-19 07:38:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:40,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:40,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:40,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:38:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:38:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:40,853 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:40,856 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:41,576 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:41,589 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:41,589 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:38:41,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:41 BoogieIcfgContainer [2023-11-19 07:38:41,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:41,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:41,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:41,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:41,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:40" (1/3) ... [2023-11-19 07:38:41,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b21fd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:41, skipping insertion in model container [2023-11-19 07:38:41,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:40" (2/3) ... [2023-11-19 07:38:41,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b21fd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:41, skipping insertion in model container [2023-11-19 07:38:41,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:41" (3/3) ... [2023-11-19 07:38:41,609 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i [2023-11-19 07:38:41,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:41,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:38:41,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:41,694 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;@7758e11d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:41,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:38:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:38:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:38:41,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:41,720 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:41,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:41,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1214165343, now seen corresponding path program 1 times [2023-11-19 07:38:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425772561] [2023-11-19 07:38:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:42,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425772561] [2023-11-19 07:38:42,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:38:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936499062] [2023-11-19 07:38:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:42,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:42,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:42,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:42,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:38:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:38:42,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-11-19 07:38:42,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:42,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936499062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:42,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:42,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:42,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46584055] [2023-11-19 07:38:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:42,494 INFO L87 Difference]: Start difference. First operand has 90 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-19 07:38:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:42,532 INFO L93 Difference]: Finished difference Result 172 states and 304 transitions. [2023-11-19 07:38:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:42,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 193 [2023-11-19 07:38:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:42,543 INFO L225 Difference]: With dead ends: 172 [2023-11-19 07:38:42,543 INFO L226 Difference]: Without dead ends: 85 [2023-11-19 07:38:42,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 07:38:42,551 INFO L413 NwaCegarLoop]: 131 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, 131 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 07:38:42,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-19 07:38:42,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-19 07:38:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:38:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2023-11-19 07:38:42,625 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 193 [2023-11-19 07:38:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2023-11-19 07:38:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-19 07:38:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2023-11-19 07:38:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:38:42,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:42,646 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:42,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:42,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:42,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash -956469609, now seen corresponding path program 1 times [2023-11-19 07:38:42,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:42,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304853990] [2023-11-19 07:38:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:42,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:42,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:42,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920193715] [2023-11-19 07:38:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:42,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:42,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:42,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:42,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:38:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:43,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:38:43,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-19 07:38:43,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:43,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304853990] [2023-11-19 07:38:43,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:43,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920193715] [2023-11-19 07:38:43,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920193715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:43,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564191782] [2023-11-19 07:38:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:43,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:43,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:43,249 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-19 07:38:43,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:43,342 INFO L93 Difference]: Finished difference Result 168 states and 261 transitions. [2023-11-19 07:38:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 193 [2023-11-19 07:38:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:43,350 INFO L225 Difference]: With dead ends: 168 [2023-11-19 07:38:43,351 INFO L226 Difference]: Without dead ends: 86 [2023-11-19 07:38:43,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:43,358 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:43,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-19 07:38:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-19 07:38:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:38:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 132 transitions. [2023-11-19 07:38:43,390 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 132 transitions. Word has length 193 [2023-11-19 07:38:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:43,394 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 132 transitions. [2023-11-19 07:38:43,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-19 07:38:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 132 transitions. [2023-11-19 07:38:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:38:43,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:43,398 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:43,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:43,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:43,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:43,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1657534187, now seen corresponding path program 1 times [2023-11-19 07:38:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:43,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316882605] [2023-11-19 07:38:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:43,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870765759] [2023-11-19 07:38:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:43,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:43,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:43,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:43,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:38:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:43,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:43,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 869 proven. 51 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-11-19 07:38:44,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-19 07:38:44,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:44,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316882605] [2023-11-19 07:38:44,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:44,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870765759] [2023-11-19 07:38:44,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870765759] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:44,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:44,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:38:44,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909043549] [2023-11-19 07:38:44,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:44,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:38:44,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:38:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:44,474 INFO L87 Difference]: Start difference. First operand 86 states and 132 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-19 07:38:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:44,789 INFO L93 Difference]: Finished difference Result 175 states and 266 transitions. [2023-11-19 07:38:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:38:44,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 193 [2023-11-19 07:38:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:44,794 INFO L225 Difference]: With dead ends: 175 [2023-11-19 07:38:44,794 INFO L226 Difference]: Without dead ends: 92 [2023-11-19 07:38:44,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:38:44,796 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 108 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:44,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 197 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:38:44,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-19 07:38:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-11-19 07:38:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 57 states have internal predecessors, (74), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:38:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 134 transitions. [2023-11-19 07:38:44,817 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 134 transitions. Word has length 193 [2023-11-19 07:38:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:44,818 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 134 transitions. [2023-11-19 07:38:44,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-19 07:38:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 134 transitions. [2023-11-19 07:38:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:38:44,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:44,822 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:44,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:45,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:45,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:45,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash 654849896, now seen corresponding path program 1 times [2023-11-19 07:38:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:45,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554600888] [2023-11-19 07:38:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:45,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:45,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72098679] [2023-11-19 07:38:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:45,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:45,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:45,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:45,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:38:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:45,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 717 proven. 63 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-11-19 07:38:45,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 24 proven. 63 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-19 07:38:45,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:45,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554600888] [2023-11-19 07:38:45,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72098679] [2023-11-19 07:38:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72098679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:45,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:38:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33445274] [2023-11-19 07:38:45,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:45,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:38:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:45,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:38:45,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:45,876 INFO L87 Difference]: Start difference. First operand 90 states and 134 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-11-19 07:38:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:46,184 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2023-11-19 07:38:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:38:46,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 194 [2023-11-19 07:38:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:46,193 INFO L225 Difference]: With dead ends: 182 [2023-11-19 07:38:46,193 INFO L226 Difference]: Without dead ends: 95 [2023-11-19 07:38:46,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:38:46,200 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 96 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:46,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 194 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:38:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-19 07:38:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-11-19 07:38:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.271186440677966) internal successors, (75), 59 states have internal predecessors, (75), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:38:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2023-11-19 07:38:46,231 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 194 [2023-11-19 07:38:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:46,233 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2023-11-19 07:38:46,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-11-19 07:38:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2023-11-19 07:38:46,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-19 07:38:46,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:46,238 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:46,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:46,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:46,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:46,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:46,461 INFO L85 PathProgramCache]: Analyzing trace with hash 670790610, now seen corresponding path program 1 times [2023-11-19 07:38:46,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:46,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180749901] [2023-11-19 07:38:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:46,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100245064] [2023-11-19 07:38:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:46,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:46,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:46,500 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:46,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:38:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:46,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:38:46,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 929 proven. 108 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:38:47,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 60 proven. 111 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2023-11-19 07:38:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180749901] [2023-11-19 07:38:47,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100245064] [2023-11-19 07:38:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100245064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:47,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:47,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:38:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547990960] [2023-11-19 07:38:47,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:38:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:38:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:38:47,700 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2023-11-19 07:38:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:48,178 INFO L93 Difference]: Finished difference Result 195 states and 277 transitions. [2023-11-19 07:38:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:38:48,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) Word has length 195 [2023-11-19 07:38:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:48,181 INFO L225 Difference]: With dead ends: 195 [2023-11-19 07:38:48,182 INFO L226 Difference]: Without dead ends: 105 [2023-11-19 07:38:48,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:38:48,184 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 61 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:48,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 274 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:38:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-19 07:38:48,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2023-11-19 07:38:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 65 states have internal predecessors, (80), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:38:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 140 transitions. [2023-11-19 07:38:48,222 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 140 transitions. Word has length 195 [2023-11-19 07:38:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:48,223 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 140 transitions. [2023-11-19 07:38:48,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2023-11-19 07:38:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 140 transitions. [2023-11-19 07:38:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-19 07:38:48,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:48,227 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:48,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:48,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:48,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:48,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash 928956048, now seen corresponding path program 1 times [2023-11-19 07:38:48,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:48,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788656693] [2023-11-19 07:38:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:48,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:48,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:48,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571216365] [2023-11-19 07:38:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:48,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:48,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:48,499 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:48,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:38:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:48,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:38:48,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 593 proven. 69 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-19 07:38:49,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-19 07:38:49,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788656693] [2023-11-19 07:38:49,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571216365] [2023-11-19 07:38:49,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571216365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:49,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:49,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-19 07:38:49,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105440049] [2023-11-19 07:38:49,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:49,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:38:49,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:49,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:38:49,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:38:49,333 INFO L87 Difference]: Start difference. First operand 101 states and 140 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-11-19 07:38:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:50,013 INFO L93 Difference]: Finished difference Result 360 states and 490 transitions. [2023-11-19 07:38:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:38:50,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 195 [2023-11-19 07:38:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:50,017 INFO L225 Difference]: With dead ends: 360 [2023-11-19 07:38:50,017 INFO L226 Difference]: Without dead ends: 262 [2023-11-19 07:38:50,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=600, Unknown=0, NotChecked=0, Total=870 [2023-11-19 07:38:50,019 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 549 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:50,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 398 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:38:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-19 07:38:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 157. [2023-11-19 07:38:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 115 states have (on average 1.3043478260869565) internal successors, (150), 116 states have internal predecessors, (150), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 07:38:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 218 transitions. [2023-11-19 07:38:50,058 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 218 transitions. Word has length 195 [2023-11-19 07:38:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:50,060 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 218 transitions. [2023-11-19 07:38:50,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-11-19 07:38:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 218 transitions. [2023-11-19 07:38:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-19 07:38:50,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:50,063 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:50,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:50,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:50,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:50,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1351657874, now seen corresponding path program 1 times [2023-11-19 07:38:50,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:50,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298676740] [2023-11-19 07:38:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:50,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:50,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:50,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134038695] [2023-11-19 07:38:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:50,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:50,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:50,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:50,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a8363e-6553-410b-8d2d-2f554403f0a5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:38:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:50,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-19 07:38:50,640 INFO L285 TraceCheckSpWp]: Computing forward predicates...