./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.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_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/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_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/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_9ad8ce56-3b46-4be7-ab3d-706119977b70/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 e5d824b03b1062bc80d2a26259481f4ec625cce3bb4d233966c7a76128ce8234 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:32,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:32,656 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:54:32,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:32,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:32,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:32,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:32,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:32,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:32,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:32,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:32,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:32,711 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:32,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:32,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:32,714 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:32,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:32,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:32,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:32,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:32,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:32,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:32,717 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:32,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:32,718 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:32,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:32,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:32,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:32,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:32,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:32,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:32,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:32,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:32,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:32,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:32,723 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:32,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:32,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:32,724 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:32,724 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_9ad8ce56-3b46-4be7-ab3d-706119977b70/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5d824b03b1062bc80d2a26259481f4ec625cce3bb4d233966c7a76128ce8234 [2023-11-19 07:54:33,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:33,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:33,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:33,103 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:33,104 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:33,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-11-19 07:54:36,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:36,495 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:36,496 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-11-19 07:54:36,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/data/c55a2a02e/6cb22857344e403fbaae4b8589a82de8/FLAG1935c0180 [2023-11-19 07:54:36,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/data/c55a2a02e/6cb22857344e403fbaae4b8589a82de8 [2023-11-19 07:54:36,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:36,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:36,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:36,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:36,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:36,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:36" (1/1) ... [2023-11-19 07:54:36,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40413d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:36, skipping insertion in model container [2023-11-19 07:54:36,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:36" (1/1) ... [2023-11-19 07:54:36,617 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:36,815 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_9ad8ce56-3b46-4be7-ab3d-706119977b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i[915,928] [2023-11-19 07:54:37,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:37,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:37,096 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_9ad8ce56-3b46-4be7-ab3d-706119977b70/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i[915,928] [2023-11-19 07:54:37,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:37,199 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:37,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37 WrapperNode [2023-11-19 07:54:37,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:37,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:37,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:37,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:37,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,314 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 543 [2023-11-19 07:54:37,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:37,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:37,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:37,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:37,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:37,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:37,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:37,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:37,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (1/1) ... [2023-11-19 07:54:37,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:37,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:37,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:37,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:54:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:54:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:37,674 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:37,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:38,569 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:38,580 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:38,580 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:54:38,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:38 BoogieIcfgContainer [2023-11-19 07:54:38,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:38,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:38,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:38,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:38,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:36" (1/3) ... [2023-11-19 07:54:38,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc0dac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:38, skipping insertion in model container [2023-11-19 07:54:38,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:37" (2/3) ... [2023-11-19 07:54:38,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc0dac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:38, skipping insertion in model container [2023-11-19 07:54:38,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:38" (3/3) ... [2023-11-19 07:54:38,595 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-11-19 07:54:38,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:38,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:54:38,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:38,683 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;@1c110fc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:38,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:54:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 139 states have internal predecessors, (213), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 07:54:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-19 07:54:38,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:38,732 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:38,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:38,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1841601891, now seen corresponding path program 1 times [2023-11-19 07:54:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:38,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375871964] [2023-11-19 07:54:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:39,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375871964] [2023-11-19 07:54:39,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:54:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778641264] [2023-11-19 07:54:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:39,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:39,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:39,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:54:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:39,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:54:39,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2023-11-19 07:54:39,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:39,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778641264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:39,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:39,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023467595] [2023-11-19 07:54:39,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:39,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:39,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:39,952 INFO L87 Difference]: Start difference. First operand has 218 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 139 states have internal predecessors, (213), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-19 07:54:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:40,016 INFO L93 Difference]: Finished difference Result 429 states and 805 transitions. [2023-11-19 07:54:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:40,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 482 [2023-11-19 07:54:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:40,031 INFO L225 Difference]: With dead ends: 429 [2023-11-19 07:54:40,031 INFO L226 Difference]: Without dead ends: 214 [2023-11-19 07:54:40,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 481 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 07:54:40,042 INFO L413 NwaCegarLoop]: 360 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, 360 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 07:54:40,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-19 07:54:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-19 07:54:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.525925925925926) internal successors, (206), 135 states have internal predecessors, (206), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 07:54:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 360 transitions. [2023-11-19 07:54:40,177 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 360 transitions. Word has length 482 [2023-11-19 07:54:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:40,177 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 360 transitions. [2023-11-19 07:54:40,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-19 07:54:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 360 transitions. [2023-11-19 07:54:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-19 07:54:40,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:40,195 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:40,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:40,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:54:40,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:40,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash -180343957, now seen corresponding path program 1 times [2023-11-19 07:54:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:40,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195265896] [2023-11-19 07:54:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:40,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:40,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:40,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119576306] [2023-11-19 07:54:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:40,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:40,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:40,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:40,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:54:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:41,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:41,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-11-19 07:54:41,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195265896] [2023-11-19 07:54:41,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:41,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119576306] [2023-11-19 07:54:41,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119576306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:41,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:41,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895470918] [2023-11-19 07:54:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:41,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:41,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:41,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:41,256 INFO L87 Difference]: Start difference. First operand 214 states and 360 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-19 07:54:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:42,322 INFO L93 Difference]: Finished difference Result 1058 states and 1746 transitions. [2023-11-19 07:54:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:42,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 482 [2023-11-19 07:54:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:42,343 INFO L225 Difference]: With dead ends: 1058 [2023-11-19 07:54:42,344 INFO L226 Difference]: Without dead ends: 847 [2023-11-19 07:54:42,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:42,349 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1127 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:42,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1344 Invalid, 568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:54:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-19 07:54:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 832. [2023-11-19 07:54:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 511 states have (on average 1.452054794520548) internal successors, (742), 516 states have internal predecessors, (742), 314 states have call successors, (314), 6 states have call predecessors, (314), 6 states have return successors, (314), 309 states have call predecessors, (314), 314 states have call successors, (314) [2023-11-19 07:54:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1370 transitions. [2023-11-19 07:54:42,538 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1370 transitions. Word has length 482 [2023-11-19 07:54:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:42,540 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1370 transitions. [2023-11-19 07:54:42,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-19 07:54:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1370 transitions. [2023-11-19 07:54:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-19 07:54:42,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:42,555 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:42,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:42,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:42,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:42,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1191461207, now seen corresponding path program 1 times [2023-11-19 07:54:42,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:42,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948545875] [2023-11-19 07:54:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:42,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:42,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575490030] [2023-11-19 07:54:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:42,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:42,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:42,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:54:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:43,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:54:43,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-11-19 07:54:43,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948545875] [2023-11-19 07:54:43,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:43,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575490030] [2023-11-19 07:54:43,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575490030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:43,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:43,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163464254] [2023-11-19 07:54:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:43,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:43,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:43,376 INFO L87 Difference]: Start difference. First operand 832 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-19 07:54:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:43,505 INFO L93 Difference]: Finished difference Result 1875 states and 3070 transitions. [2023-11-19 07:54:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:43,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 482 [2023-11-19 07:54:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:43,517 INFO L225 Difference]: With dead ends: 1875 [2023-11-19 07:54:43,518 INFO L226 Difference]: Without dead ends: 1046 [2023-11-19 07:54:43,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 480 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 07:54:43,522 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 214 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:43,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 865 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-11-19 07:54:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1042. [2023-11-19 07:54:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 621 states have (on average 1.3977455716586151) internal successors, (868), 628 states have internal predecessors, (868), 412 states have call successors, (412), 8 states have call predecessors, (412), 8 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2023-11-19 07:54:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1692 transitions. [2023-11-19 07:54:43,711 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1692 transitions. Word has length 482 [2023-11-19 07:54:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:43,712 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1692 transitions. [2023-11-19 07:54:43,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-19 07:54:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1692 transitions. [2023-11-19 07:54:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-19 07:54:43,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:43,718 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:43,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:43,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:43,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1465266477, now seen corresponding path program 1 times [2023-11-19 07:54:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:43,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534268122] [2023-11-19 07:54:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:44,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:44,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767016455] [2023-11-19 07:54:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:44,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:44,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:44,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:44,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:54:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:44,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:44,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-11-19 07:54:44,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:44,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:44,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534268122] [2023-11-19 07:54:44,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767016455] [2023-11-19 07:54:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767016455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:44,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:44,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621215497] [2023-11-19 07:54:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:44,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:44,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:44,489 INFO L87 Difference]: Start difference. First operand 1042 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-19 07:54:44,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:44,613 INFO L93 Difference]: Finished difference Result 2095 states and 3407 transitions. [2023-11-19 07:54:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:44,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 482 [2023-11-19 07:54:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:44,626 INFO L225 Difference]: With dead ends: 2095 [2023-11-19 07:54:44,626 INFO L226 Difference]: Without dead ends: 1056 [2023-11-19 07:54:44,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 480 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 07:54:44,634 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 10 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:44,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 716 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-11-19 07:54:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1044. [2023-11-19 07:54:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 630 states have internal predecessors, (870), 412 states have call successors, (412), 8 states have call predecessors, (412), 8 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2023-11-19 07:54:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1694 transitions. [2023-11-19 07:54:44,851 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1694 transitions. Word has length 482 [2023-11-19 07:54:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:44,853 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1694 transitions. [2023-11-19 07:54:44,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-19 07:54:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1694 transitions. [2023-11-19 07:54:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-19 07:54:44,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:44,861 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:44,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:45,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:45,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:54:45,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash -53737726, now seen corresponding path program 1 times [2023-11-19 07:54:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:45,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802713242] [2023-11-19 07:54:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:45,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:45,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:45,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596506971] [2023-11-19 07:54:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:45,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:45,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:45,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:45,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad8ce56-3b46-4be7-ab3d-706119977b70/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:54:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:45,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 07:54:45,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 7842 proven. 72 refuted. 0 times theorem prover too weak. 3790 trivial. 0 not checked. [2023-11-19 07:54:52,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:07,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:07,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802713242] [2023-11-19 07:55:07,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:07,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596506971] [2023-11-19 07:55:07,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596506971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:07,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:55:07,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-19 07:55:07,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765689144] [2023-11-19 07:55:07,278 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:07,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:55:07,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:07,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:55:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=706, Unknown=1, NotChecked=0, Total=870 [2023-11-19 07:55:07,284 INFO L87 Difference]: Start difference. First operand 1044 states and 1694 transitions. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 3 states have call successors, (77), 3 states have call predecessors, (77), 4 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2023-11-19 07:55:16,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 07:55:18,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]