./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-84.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_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/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_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-84.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/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_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/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 f55eb3ba374341ddcb82d29b670fafadcc1a6a5b44b0db6743c30b29cd4daaf5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:02,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:02,254 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:02,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:02,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:02,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:02,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:02,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:02,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:02,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:02,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:02,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:02,307 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:02,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:02,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:02,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:02,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:02,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:02,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:02,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:02,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:02,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:02,313 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:02,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:02,314 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:02,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:02,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:02,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:02,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:02,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:02,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:02,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:02,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:02,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:02,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:02,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:02,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:02,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:02,321 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:02,321 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_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f55eb3ba374341ddcb82d29b670fafadcc1a6a5b44b0db6743c30b29cd4daaf5 [2023-11-19 07:37:02,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:02,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:02,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:02,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:02,697 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:02,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-84.i [2023-11-19 07:37:05,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:05,985 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:05,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-84.i [2023-11-19 07:37:05,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/data/e4b368f3f/728f32bb930146a69e08773e6c5016be/FLAG15ebbcb2e [2023-11-19 07:37:06,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/data/e4b368f3f/728f32bb930146a69e08773e6c5016be [2023-11-19 07:37:06,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:06,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:06,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:06,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:06,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:06,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63de6aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06, skipping insertion in model container [2023-11-19 07:37:06,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:06,234 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_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-84.i[915,928] [2023-11-19 07:37:06,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:06,341 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:06,357 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_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-84.i[915,928] [2023-11-19 07:37:06,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:06,431 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:06,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06 WrapperNode [2023-11-19 07:37:06,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:06,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:06,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:06,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:06,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,529 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2023-11-19 07:37:06,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:06,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:06,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:06,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:06,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:06,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:06,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:06,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:06,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:06,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:06,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:37:06,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:37:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:06,837 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:06,840 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:07,501 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:07,511 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:07,517 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:37:07,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:07 BoogieIcfgContainer [2023-11-19 07:37:07,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:07,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:07,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:07,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:07,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:06" (1/3) ... [2023-11-19 07:37:07,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ce0651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:07, skipping insertion in model container [2023-11-19 07:37:07,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (2/3) ... [2023-11-19 07:37:07,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ce0651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:07, skipping insertion in model container [2023-11-19 07:37:07,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:07" (3/3) ... [2023-11-19 07:37:07,535 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-84.i [2023-11-19 07:37:07,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:07,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:07,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:07,640 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;@3aa3fe3c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:07,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:37:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-19 07:37:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-19 07:37:07,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:07,700 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:07,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:07,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1239354538, now seen corresponding path program 1 times [2023-11-19 07:37:07,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:07,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330148289] [2023-11-19 07:37:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:07,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330148289] [2023-11-19 07:37:08,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:37:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112248229] [2023-11-19 07:37:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:08,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:08,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:08,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:08,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:37:08,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2023-11-19 07:37:08,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:08,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112248229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:08,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:08,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699546220] [2023-11-19 07:37:08,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:08,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:37:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:37:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:37:08,649 INFO L87 Difference]: Start difference. First operand has 135 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-19 07:37:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:08,700 INFO L93 Difference]: Finished difference Result 263 states and 481 transitions. [2023-11-19 07:37:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:37:08,704 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) Word has length 314 [2023-11-19 07:37:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:08,714 INFO L225 Difference]: With dead ends: 263 [2023-11-19 07:37:08,715 INFO L226 Difference]: Without dead ends: 131 [2023-11-19 07:37:08,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 313 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 07:37:08,724 INFO L413 NwaCegarLoop]: 211 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, 211 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 07:37:08,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-19 07:37:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-19 07:37:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 78 states have internal predecessors, (109), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-19 07:37:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 211 transitions. [2023-11-19 07:37:08,795 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 211 transitions. Word has length 314 [2023-11-19 07:37:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:08,796 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 211 transitions. [2023-11-19 07:37:08,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-19 07:37:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 211 transitions. [2023-11-19 07:37:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-19 07:37:08,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:08,805 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:08,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:37:09,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:09,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:09,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash 678895180, now seen corresponding path program 1 times [2023-11-19 07:37:09,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:09,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702625266] [2023-11-19 07:37:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:09,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:09,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:09,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553979311] [2023-11-19 07:37:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:09,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:09,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:09,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:37:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:09,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:37:09,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:29,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:29,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702625266] [2023-11-19 07:37:29,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553979311] [2023-11-19 07:37:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553979311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:29,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:29,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:37:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188903342] [2023-11-19 07:37:29,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:29,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:29,672 INFO L87 Difference]: Start difference. First operand 131 states and 211 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:35,902 INFO L93 Difference]: Finished difference Result 292 states and 464 transitions. [2023-11-19 07:37:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:35,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 314 [2023-11-19 07:37:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:35,908 INFO L225 Difference]: With dead ends: 292 [2023-11-19 07:37:35,909 INFO L226 Difference]: Without dead ends: 164 [2023-11-19 07:37:35,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:35,912 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 98 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:35,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 792 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:37:35,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-19 07:37:35,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2023-11-19 07:37:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 104 states have internal predecessors, (142), 55 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-19 07:37:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 252 transitions. [2023-11-19 07:37:35,951 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 252 transitions. Word has length 314 [2023-11-19 07:37:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:35,953 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 252 transitions. [2023-11-19 07:37:35,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 252 transitions. [2023-11-19 07:37:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-19 07:37:35,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:35,961 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:35,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:36,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:36,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:36,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash 885673832, now seen corresponding path program 1 times [2023-11-19 07:37:36,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:36,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919254356] [2023-11-19 07:37:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:36,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:36,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165577345] [2023-11-19 07:37:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:36,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:36,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:36,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:36,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:37:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:36,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:37:36,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1410 proven. 126 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-11-19 07:37:36,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2023-11-19 07:37:37,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:37,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919254356] [2023-11-19 07:37:37,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:37,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165577345] [2023-11-19 07:37:37,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165577345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:37,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:37:37,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-19 07:37:37,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306598652] [2023-11-19 07:37:37,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:37,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:37:37,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:37:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:37:37,342 INFO L87 Difference]: Start difference. First operand 161 states and 252 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-11-19 07:37:38,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:38,257 INFO L93 Difference]: Finished difference Result 400 states and 603 transitions. [2023-11-19 07:37:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:37:38,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) Word has length 315 [2023-11-19 07:37:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:38,273 INFO L225 Difference]: With dead ends: 400 [2023-11-19 07:37:38,273 INFO L226 Difference]: Without dead ends: 242 [2023-11-19 07:37:38,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:37:38,276 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 343 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:38,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 498 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:37:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-19 07:37:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 234. [2023-11-19 07:37:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 167 states have (on average 1.3592814371257484) internal successors, (227), 170 states have internal predecessors, (227), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (59), 56 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-19 07:37:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 345 transitions. [2023-11-19 07:37:38,353 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 345 transitions. Word has length 315 [2023-11-19 07:37:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:38,357 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 345 transitions. [2023-11-19 07:37:38,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-11-19 07:37:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 345 transitions. [2023-11-19 07:37:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-19 07:37:38,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:38,363 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:38,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:38,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:38,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:38,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash -125443418, now seen corresponding path program 1 times [2023-11-19 07:37:38,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244329903] [2023-11-19 07:37:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:38,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012617345] [2023-11-19 07:37:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:38,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:38,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:37:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:38,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:37:38,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:39,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:39,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:39,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244329903] [2023-11-19 07:37:39,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:39,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012617345] [2023-11-19 07:37:39,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012617345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:39,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:39,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:37:39,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937101539] [2023-11-19 07:37:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:39,544 INFO L87 Difference]: Start difference. First operand 234 states and 345 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:39,841 INFO L93 Difference]: Finished difference Result 480 states and 701 transitions. [2023-11-19 07:37:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 315 [2023-11-19 07:37:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:39,847 INFO L225 Difference]: With dead ends: 480 [2023-11-19 07:37:39,848 INFO L226 Difference]: Without dead ends: 249 [2023-11-19 07:37:39,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:39,857 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 77 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:39,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 801 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:37:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-19 07:37:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 210. [2023-11-19 07:37:39,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 147 states have internal predecessors, (193), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 07:37:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 307 transitions. [2023-11-19 07:37:39,906 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 307 transitions. Word has length 315 [2023-11-19 07:37:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:39,908 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 307 transitions. [2023-11-19 07:37:39,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 307 transitions. [2023-11-19 07:37:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-19 07:37:39,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:39,912 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:39,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:40,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:40,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:40,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash 225566311, now seen corresponding path program 1 times [2023-11-19 07:37:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:40,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017211092] [2023-11-19 07:37:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:40,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:40,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246298662] [2023-11-19 07:37:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:40,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:40,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:40,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:37:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:40,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:37:40,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:41,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:41,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017211092] [2023-11-19 07:37:41,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246298662] [2023-11-19 07:37:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246298662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:41,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:37:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431806222] [2023-11-19 07:37:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:41,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:41,896 INFO L87 Difference]: Start difference. First operand 210 states and 307 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:42,464 INFO L93 Difference]: Finished difference Result 549 states and 793 transitions. [2023-11-19 07:37:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:37:42,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 316 [2023-11-19 07:37:42,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:42,469 INFO L225 Difference]: With dead ends: 549 [2023-11-19 07:37:42,470 INFO L226 Difference]: Without dead ends: 342 [2023-11-19 07:37:42,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:37:42,472 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 128 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:42,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1104 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:37:42,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-19 07:37:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 240. [2023-11-19 07:37:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 175 states have (on average 1.3371428571428572) internal successors, (234), 177 states have internal predecessors, (234), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 07:37:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 348 transitions. [2023-11-19 07:37:42,507 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 348 transitions. Word has length 316 [2023-11-19 07:37:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:42,508 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 348 transitions. [2023-11-19 07:37:42,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 348 transitions. [2023-11-19 07:37:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-19 07:37:42,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:42,512 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:42,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:42,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:42,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash 926630889, now seen corresponding path program 1 times [2023-11-19 07:37:42,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:42,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905816355] [2023-11-19 07:37:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:42,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:42,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560962732] [2023-11-19 07:37:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:42,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:42,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,793 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:37:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:43,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:37:43,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:43,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:43,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:43,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905816355] [2023-11-19 07:37:43,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:43,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560962732] [2023-11-19 07:37:43,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560962732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:43,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:43,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:37:43,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122265181] [2023-11-19 07:37:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:37:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:37:43,999 INFO L87 Difference]: Start difference. First operand 240 states and 348 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:44,550 INFO L93 Difference]: Finished difference Result 585 states and 840 transitions. [2023-11-19 07:37:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:37:44,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 316 [2023-11-19 07:37:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:44,556 INFO L225 Difference]: With dead ends: 585 [2023-11-19 07:37:44,556 INFO L226 Difference]: Without dead ends: 348 [2023-11-19 07:37:44,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:37:44,558 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 128 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:44,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1167 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-19 07:37:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 240. [2023-11-19 07:37:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 175 states have (on average 1.3371428571428572) internal successors, (234), 177 states have internal predecessors, (234), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 07:37:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 348 transitions. [2023-11-19 07:37:44,598 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 348 transitions. Word has length 316 [2023-11-19 07:37:44,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:44,602 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 348 transitions. [2023-11-19 07:37:44,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 348 transitions. [2023-11-19 07:37:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-19 07:37:44,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:44,606 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:44,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:44,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:44,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -361239703, now seen corresponding path program 1 times [2023-11-19 07:37:44,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:44,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180979842] [2023-11-19 07:37:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:44,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758412763] [2023-11-19 07:37:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:44,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:44,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:37:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:46,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:46,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:46,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180979842] [2023-11-19 07:37:46,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:46,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758412763] [2023-11-19 07:37:46,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758412763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:46,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:46,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:37:46,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032720416] [2023-11-19 07:37:46,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:46,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:46,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:46,755 INFO L87 Difference]: Start difference. First operand 240 states and 348 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:47,571 INFO L93 Difference]: Finished difference Result 585 states and 840 transitions. [2023-11-19 07:37:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:37:47,572 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 316 [2023-11-19 07:37:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:47,575 INFO L225 Difference]: With dead ends: 585 [2023-11-19 07:37:47,576 INFO L226 Difference]: Without dead ends: 348 [2023-11-19 07:37:47,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:37:47,578 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 111 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:47,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1117 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:37:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-19 07:37:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2023-11-19 07:37:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 179 states have (on average 1.3407821229050279) internal successors, (240), 181 states have internal predecessors, (240), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 07:37:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 354 transitions. [2023-11-19 07:37:47,609 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 354 transitions. Word has length 316 [2023-11-19 07:37:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:47,610 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 354 transitions. [2023-11-19 07:37:47,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 354 transitions. [2023-11-19 07:37:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-19 07:37:47,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:47,613 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:47,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:47,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:47,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:47,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:47,828 INFO L85 PathProgramCache]: Analyzing trace with hash 339824875, now seen corresponding path program 1 times [2023-11-19 07:37:47,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:47,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284786912] [2023-11-19 07:37:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:47,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:47,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:47,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434871608] [2023-11-19 07:37:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:47,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:47,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:47,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:47,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:37:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:48,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:37:48,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:49,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:49,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:49,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284786912] [2023-11-19 07:37:49,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:49,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434871608] [2023-11-19 07:37:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434871608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:49,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:37:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11330643] [2023-11-19 07:37:49,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:49,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:37:49,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:49,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:37:49,104 INFO L87 Difference]: Start difference. First operand 244 states and 354 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:49,927 INFO L93 Difference]: Finished difference Result 595 states and 852 transitions. [2023-11-19 07:37:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:37:49,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 316 [2023-11-19 07:37:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:49,932 INFO L225 Difference]: With dead ends: 595 [2023-11-19 07:37:49,932 INFO L226 Difference]: Without dead ends: 354 [2023-11-19 07:37:49,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:37:49,934 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 109 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:49,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1332 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:37:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-19 07:37:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 240. [2023-11-19 07:37:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 175 states have (on average 1.3371428571428572) internal successors, (234), 177 states have internal predecessors, (234), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 07:37:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 348 transitions. [2023-11-19 07:37:49,964 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 348 transitions. Word has length 316 [2023-11-19 07:37:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:49,965 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 348 transitions. [2023-11-19 07:37:49,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 348 transitions. [2023-11-19 07:37:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-19 07:37:49,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:49,968 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:49,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 07:37:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:50,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:50,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2112666044, now seen corresponding path program 1 times [2023-11-19 07:37:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494495780] [2023-11-19 07:37:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:50,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260474953] [2023-11-19 07:37:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:50,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:50,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:50,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:50,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:37:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:50,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:37:50,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:51,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:51,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494495780] [2023-11-19 07:37:51,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260474953] [2023-11-19 07:37:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260474953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:51,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:51,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:37:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598573026] [2023-11-19 07:37:51,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:51,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:37:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:51,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:51,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:37:51,733 INFO L87 Difference]: Start difference. First operand 240 states and 348 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:52,451 INFO L93 Difference]: Finished difference Result 745 states and 1066 transitions. [2023-11-19 07:37:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:37:52,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 317 [2023-11-19 07:37:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:52,457 INFO L225 Difference]: With dead ends: 745 [2023-11-19 07:37:52,457 INFO L226 Difference]: Without dead ends: 508 [2023-11-19 07:37:52,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:37:52,459 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 159 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:52,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1468 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-19 07:37:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 273. [2023-11-19 07:37:52,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 208 states have (on average 1.3509615384615385) internal successors, (281), 210 states have internal predecessors, (281), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 07:37:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 395 transitions. [2023-11-19 07:37:52,491 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 395 transitions. Word has length 317 [2023-11-19 07:37:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:52,492 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 395 transitions. [2023-11-19 07:37:52,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 395 transitions. [2023-11-19 07:37:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-19 07:37:52,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:52,495 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:52,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:52,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:52,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:52,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1411601466, now seen corresponding path program 1 times [2023-11-19 07:37:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467237597] [2023-11-19 07:37:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:52,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537947801] [2023-11-19 07:37:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:52,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:52,776 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:52,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:37:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:53,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:37:53,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-19 07:37:53,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:53,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:53,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467237597] [2023-11-19 07:37:53,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537947801] [2023-11-19 07:37:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537947801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:53,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:53,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:37:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073328129] [2023-11-19 07:37:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:37:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:37:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:37:53,784 INFO L87 Difference]: Start difference. First operand 273 states and 395 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:54,559 INFO L93 Difference]: Finished difference Result 787 states and 1122 transitions. [2023-11-19 07:37:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:37:54,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 317 [2023-11-19 07:37:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:54,565 INFO L225 Difference]: With dead ends: 787 [2023-11-19 07:37:54,566 INFO L226 Difference]: Without dead ends: 517 [2023-11-19 07:37:54,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:37:54,568 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 183 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:54,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1342 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:37:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-19 07:37:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 269. [2023-11-19 07:37:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 204 states have (on average 1.3480392156862746) internal successors, (275), 206 states have internal predecessors, (275), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 07:37:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 389 transitions. [2023-11-19 07:37:54,603 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 389 transitions. Word has length 317 [2023-11-19 07:37:54,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:54,604 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 389 transitions. [2023-11-19 07:37:54,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-19 07:37:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 389 transitions. [2023-11-19 07:37:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-19 07:37:54,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:54,608 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:54,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:54,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:37:54,823 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:54,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1595495238, now seen corresponding path program 1 times [2023-11-19 07:37:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857090349] [2023-11-19 07:37:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:54,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:54,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:54,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475082628] [2023-11-19 07:37:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:54,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:54,867 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:54,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56212bb2-04f2-4f1a-b55e-abe2bb59bb86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:37:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:55,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:37:55,129 INFO L285 TraceCheckSpWp]: Computing forward predicates...