./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 0f173a1e127c6e1033e5b4dd17ed93bd9e595663c9235b403a3de8ffd3ad4687 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:35,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:35,922 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:17:35,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:35,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:35,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:35,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:35,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:35,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:35,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:35,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:35,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:35,988 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:35,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:35,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:35,991 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:35,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:35,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:35,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:35,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:35,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:35,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:35,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:35,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:35,996 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:35,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:35,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:35,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:35,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:35,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:36,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:36,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:36,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:36,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:36,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:36,002 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:36,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:36,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:36,003 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:36,003 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_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f173a1e127c6e1033e5b4dd17ed93bd9e595663c9235b403a3de8ffd3ad4687 [2023-11-06 22:17:36,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:36,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:36,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:36,294 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:36,295 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:36,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i [2023-11-06 22:17:39,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:39,698 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:39,699 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i [2023-11-06 22:17:39,711 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/data/0adf236fd/f37c40f2424041ebad52d324f14ccf3d/FLAG81c61ce80 [2023-11-06 22:17:39,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/data/0adf236fd/f37c40f2424041ebad52d324f14ccf3d [2023-11-06 22:17:39,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:39,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:39,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:39,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:39,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:39,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:39" (1/1) ... [2023-11-06 22:17:39,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6759e481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:39, skipping insertion in model container [2023-11-06 22:17:39,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:39" (1/1) ... [2023-11-06 22:17:39,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:40,004 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_49899a27-de4d-449c-b5e0-eafb783a36fb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i[916,929] [2023-11-06 22:17:40,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:40,104 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:40,115 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_49899a27-de4d-449c-b5e0-eafb783a36fb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i[916,929] [2023-11-06 22:17:40,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:40,186 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:40,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40 WrapperNode [2023-11-06 22:17:40,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:40,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:40,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:40,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:40,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,279 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 269 [2023-11-06 22:17:40,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:40,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:40,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:40,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:40,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:40,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:40,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:40,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:40,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (1/1) ... [2023-11-06 22:17:40,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:40,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:40,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:40,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:17:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:17:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:17:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:40,598 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:40,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:41,177 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:41,194 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:41,194 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:17:41,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:41 BoogieIcfgContainer [2023-11-06 22:17:41,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:41,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:41,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:41,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:41,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:39" (1/3) ... [2023-11-06 22:17:41,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d047c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:41, skipping insertion in model container [2023-11-06 22:17:41,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:40" (2/3) ... [2023-11-06 22:17:41,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d047c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:41, skipping insertion in model container [2023-11-06 22:17:41,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:41" (3/3) ... [2023-11-06 22:17:41,206 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-88.i [2023-11-06 22:17:41,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:41,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:17:41,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:17:41,287 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=LoopsAndPotentialCycles, 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;@6077786b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:17:41,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:17:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 80 states have (on average 1.4625) internal successors, (117), 81 states have internal predecessors, (117), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-06 22:17:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:17:41,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:41,311 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:41,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:41,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:41,317 INFO L85 PathProgramCache]: Analyzing trace with hash -320799617, now seen corresponding path program 1 times [2023-11-06 22:17:41,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101185494] [2023-11-06 22:17:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:41,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:41,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101185494] [2023-11-06 22:17:41,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:17:41,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347191832] [2023-11-06 22:17:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:41,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:41,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:41,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:41,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:17:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:42,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:17:42,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-11-06 22:17:42,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347191832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:42,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:42,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162146515] [2023-11-06 22:17:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:42,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:17:42,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:17:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:42,171 INFO L87 Difference]: Start difference. First operand has 111 states, 80 states have (on average 1.4625) internal successors, (117), 81 states have internal predecessors, (117), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-06 22:17:42,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:42,243 INFO L93 Difference]: Finished difference Result 215 states and 368 transitions. [2023-11-06 22:17:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:17:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2023-11-06 22:17:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:42,260 INFO L225 Difference]: With dead ends: 215 [2023-11-06 22:17:42,260 INFO L226 Difference]: Without dead ends: 107 [2023-11-06 22:17:42,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:42,278 INFO L413 NwaCegarLoop]: 166 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, 166 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 [2023-11-06 22:17:42,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-06 22:17:42,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-06 22:17:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-06 22:17:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 166 transitions. [2023-11-06 22:17:42,373 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 166 transitions. Word has length 191 [2023-11-06 22:17:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:42,374 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 166 transitions. [2023-11-06 22:17:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-06 22:17:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 166 transitions. [2023-11-06 22:17:42,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:17:42,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:42,388 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:42,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:42,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:17:42,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:42,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1381162487, now seen corresponding path program 1 times [2023-11-06 22:17:42,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:42,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566236152] [2023-11-06 22:17:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:42,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:42,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:42,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683465090] [2023-11-06 22:17:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:42,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:42,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:42,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:17:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:42,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:17:42,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:17:47,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566236152] [2023-11-06 22:17:47,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:47,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683465090] [2023-11-06 22:17:47,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683465090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:47,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:47,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:17:47,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138294604] [2023-11-06 22:17:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:47,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:17:47,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:17:47,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:17:47,008 INFO L87 Difference]: Start difference. First operand 107 states and 166 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:48,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:48,316 INFO L93 Difference]: Finished difference Result 477 states and 739 transitions. [2023-11-06 22:17:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:17:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-11-06 22:17:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:48,324 INFO L225 Difference]: With dead ends: 477 [2023-11-06 22:17:48,324 INFO L226 Difference]: Without dead ends: 373 [2023-11-06 22:17:48,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:17:48,327 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 405 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:48,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 820 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:17:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-06 22:17:48,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 213. [2023-11-06 22:17:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 154 states have (on average 1.422077922077922) internal successors, (219), 154 states have internal predecessors, (219), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-06 22:17:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 331 transitions. [2023-11-06 22:17:48,386 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 331 transitions. Word has length 191 [2023-11-06 22:17:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:48,388 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 331 transitions. [2023-11-06 22:17:48,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 331 transitions. [2023-11-06 22:17:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:17:48,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:48,392 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:48,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:48,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:17:48,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:48,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash 101298809, now seen corresponding path program 1 times [2023-11-06 22:17:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:48,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527932864] [2023-11-06 22:17:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:48,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:48,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643643437] [2023-11-06 22:17:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:48,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:48,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:48,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:48,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:17:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:48,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:17:48,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:17:49,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:49,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527932864] [2023-11-06 22:17:49,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643643437] [2023-11-06 22:17:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643643437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822189243] [2023-11-06 22:17:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:49,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:49,530 INFO L87 Difference]: Start difference. First operand 213 states and 331 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:49,650 INFO L93 Difference]: Finished difference Result 532 states and 827 transitions. [2023-11-06 22:17:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:49,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-11-06 22:17:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:49,655 INFO L225 Difference]: With dead ends: 532 [2023-11-06 22:17:49,655 INFO L226 Difference]: Without dead ends: 322 [2023-11-06 22:17:49,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:49,658 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 75 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:49,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 460 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-06 22:17:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 319. [2023-11-06 22:17:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 231 states have (on average 1.4112554112554112) internal successors, (326), 231 states have internal predecessors, (326), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-06 22:17:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 494 transitions. [2023-11-06 22:17:49,744 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 494 transitions. Word has length 191 [2023-11-06 22:17:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:49,746 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 494 transitions. [2023-11-06 22:17:49,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 494 transitions. [2023-11-06 22:17:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:17:49,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:49,750 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:49,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:49,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:49,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:49,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash 427841340, now seen corresponding path program 1 times [2023-11-06 22:17:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:49,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192895491] [2023-11-06 22:17:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:49,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:50,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:50,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397045871] [2023-11-06 22:17:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:50,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:50,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:50,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:50,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:17:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:50,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:17:50,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:17:50,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:50,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:50,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192895491] [2023-11-06 22:17:50,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:50,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397045871] [2023-11-06 22:17:50,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397045871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:50,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:50,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:50,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383661525] [2023-11-06 22:17:50,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:50,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:50,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:50,926 INFO L87 Difference]: Start difference. First operand 319 states and 494 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:51,273 INFO L93 Difference]: Finished difference Result 820 states and 1269 transitions. [2023-11-06 22:17:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:17:51,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2023-11-06 22:17:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:51,281 INFO L225 Difference]: With dead ends: 820 [2023-11-06 22:17:51,281 INFO L226 Difference]: Without dead ends: 504 [2023-11-06 22:17:51,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:17:51,288 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 186 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:51,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 573 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:17:51,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-11-06 22:17:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 374. [2023-11-06 22:17:51,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 257 states have (on average 1.377431906614786) internal successors, (354), 257 states have internal predecessors, (354), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-06 22:17:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 578 transitions. [2023-11-06 22:17:51,420 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 578 transitions. Word has length 192 [2023-11-06 22:17:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:51,422 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 578 transitions. [2023-11-06 22:17:51,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 578 transitions. [2023-11-06 22:17:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:17:51,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:51,426 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:51,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:51,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:51,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:51,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash 937314430, now seen corresponding path program 1 times [2023-11-06 22:17:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959231479] [2023-11-06 22:17:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:51,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:51,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674767292] [2023-11-06 22:17:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:51,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:51,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:51,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:51,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:17:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:51,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:17:51,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:17:51,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:51,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:51,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959231479] [2023-11-06 22:17:51,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:51,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674767292] [2023-11-06 22:17:51,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674767292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:51,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:51,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:51,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509346125] [2023-11-06 22:17:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:51,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:51,905 INFO L87 Difference]: Start difference. First operand 374 states and 578 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:52,311 INFO L93 Difference]: Finished difference Result 988 states and 1532 transitions. [2023-11-06 22:17:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:52,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2023-11-06 22:17:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:52,319 INFO L225 Difference]: With dead ends: 988 [2023-11-06 22:17:52,319 INFO L226 Difference]: Without dead ends: 672 [2023-11-06 22:17:52,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:52,322 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 174 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:52,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 429 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:17:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-06 22:17:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 670. [2023-11-06 22:17:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 466 states have (on average 1.371244635193133) internal successors, (639), 466 states have internal predecessors, (639), 196 states have call successors, (196), 7 states have call predecessors, (196), 7 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-06 22:17:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1031 transitions. [2023-11-06 22:17:52,490 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1031 transitions. Word has length 192 [2023-11-06 22:17:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:52,491 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1031 transitions. [2023-11-06 22:17:52,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1031 transitions. [2023-11-06 22:17:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:17:52,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:52,495 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:52,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:52,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:52,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:52,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash 716889230, now seen corresponding path program 1 times [2023-11-06 22:17:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:52,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393788691] [2023-11-06 22:17:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:52,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:52,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745431690] [2023-11-06 22:17:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:52,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:52,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:52,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:52,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:17:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:52,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:17:52,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:17:53,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:53,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393788691] [2023-11-06 22:17:53,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745431690] [2023-11-06 22:17:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745431690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:53,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:53,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:17:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746961122] [2023-11-06 22:17:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:17:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:17:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:17:53,271 INFO L87 Difference]: Start difference. First operand 670 states and 1031 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:53,791 INFO L93 Difference]: Finished difference Result 1748 states and 2675 transitions. [2023-11-06 22:17:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:17:53,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2023-11-06 22:17:53,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:53,800 INFO L225 Difference]: With dead ends: 1748 [2023-11-06 22:17:53,801 INFO L226 Difference]: Without dead ends: 1136 [2023-11-06 22:17:53,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:17:53,804 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 294 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:53,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 684 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:17:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-11-06 22:17:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 777. [2023-11-06 22:17:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 573 states have (on average 1.4048865619546247) internal successors, (805), 573 states have internal predecessors, (805), 196 states have call successors, (196), 7 states have call predecessors, (196), 7 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-06 22:17:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1197 transitions. [2023-11-06 22:17:53,991 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1197 transitions. Word has length 194 [2023-11-06 22:17:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:53,995 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1197 transitions. [2023-11-06 22:17:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1197 transitions. [2023-11-06 22:17:53,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:17:53,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:53,999 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:54,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:54,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:54,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:54,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1584009222, now seen corresponding path program 1 times [2023-11-06 22:17:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:54,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817560509] [2023-11-06 22:17:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:54,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:54,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406678218] [2023-11-06 22:17:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:54,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:54,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:54,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:17:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:54,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:17:54,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:17:54,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:54,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817560509] [2023-11-06 22:17:54,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406678218] [2023-11-06 22:17:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406678218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:54,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:54,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:17:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874572194] [2023-11-06 22:17:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:54,515 INFO L87 Difference]: Start difference. First operand 777 states and 1197 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:55,495 INFO L93 Difference]: Finished difference Result 2380 states and 3652 transitions. [2023-11-06 22:17:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:17:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2023-11-06 22:17:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:55,509 INFO L225 Difference]: With dead ends: 2380 [2023-11-06 22:17:55,509 INFO L226 Difference]: Without dead ends: 1633 [2023-11-06 22:17:55,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:17:55,513 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 393 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:55,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 557 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:17:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-06 22:17:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1231. [2023-11-06 22:17:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 940 states have (on average 1.3936170212765957) internal successors, (1310), 940 states have internal predecessors, (1310), 280 states have call successors, (280), 10 states have call predecessors, (280), 10 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2023-11-06 22:17:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1870 transitions. [2023-11-06 22:17:55,777 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1870 transitions. Word has length 194 [2023-11-06 22:17:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:55,778 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1870 transitions. [2023-11-06 22:17:55,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1870 transitions. [2023-11-06 22:17:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:17:55,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:55,783 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:55,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:55,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:55,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:55,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash 997203208, now seen corresponding path program 1 times [2023-11-06 22:17:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:55,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543654698] [2023-11-06 22:17:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:56,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:56,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066841126] [2023-11-06 22:17:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:56,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:56,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:56,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:56,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:17:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:56,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:17:56,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:17:58,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:58,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:58,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543654698] [2023-11-06 22:17:58,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:58,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066841126] [2023-11-06 22:17:58,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066841126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:58,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:58,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:17:58,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643300720] [2023-11-06 22:17:58,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:58,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:17:58,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:17:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:17:58,663 INFO L87 Difference]: Start difference. First operand 1231 states and 1870 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:59,726 INFO L93 Difference]: Finished difference Result 2413 states and 3665 transitions. [2023-11-06 22:17:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:17:59,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2023-11-06 22:17:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:59,736 INFO L225 Difference]: With dead ends: 2413 [2023-11-06 22:17:59,736 INFO L226 Difference]: Without dead ends: 1240 [2023-11-06 22:17:59,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:17:59,740 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 337 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:59,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 775 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:17:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2023-11-06 22:17:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1231. [2023-11-06 22:17:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 940 states have (on average 1.3851063829787233) internal successors, (1302), 940 states have internal predecessors, (1302), 280 states have call successors, (280), 10 states have call predecessors, (280), 10 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2023-11-06 22:17:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1862 transitions. [2023-11-06 22:17:59,945 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1862 transitions. Word has length 194 [2023-11-06 22:17:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:59,946 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1862 transitions. [2023-11-06 22:17:59,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:17:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1862 transitions. [2023-11-06 22:17:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:17:59,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:59,950 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:59,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:00,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:00,157 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:00,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:00,158 INFO L85 PathProgramCache]: Analyzing trace with hash -4338680, now seen corresponding path program 1 times [2023-11-06 22:18:00,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:00,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942448300] [2023-11-06 22:18:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:00,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:00,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:00,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418237200] [2023-11-06 22:18:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:00,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:00,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:00,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:18:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:00,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:18:00,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:18:00,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942448300] [2023-11-06 22:18:00,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418237200] [2023-11-06 22:18:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418237200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:00,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:00,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:18:00,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103908478] [2023-11-06 22:18:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:00,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:00,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:00,689 INFO L87 Difference]: Start difference. First operand 1231 states and 1862 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:02,473 INFO L93 Difference]: Finished difference Result 2558 states and 3871 transitions. [2023-11-06 22:18:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:18:02,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2023-11-06 22:18:02,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:02,484 INFO L225 Difference]: With dead ends: 2558 [2023-11-06 22:18:02,484 INFO L226 Difference]: Without dead ends: 1385 [2023-11-06 22:18:02,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:18:02,489 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 551 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:02,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1068 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:18:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-11-06 22:18:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1096. [2023-11-06 22:18:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 863 states have (on average 1.3974507531865585) internal successors, (1206), 863 states have internal predecessors, (1206), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-11-06 22:18:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1654 transitions. [2023-11-06 22:18:02,649 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1654 transitions. Word has length 194 [2023-11-06 22:18:02,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:02,650 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1654 transitions. [2023-11-06 22:18:02,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1654 transitions. [2023-11-06 22:18:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:18:02,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:02,654 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:02,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:02,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:18:02,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:02,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -591144694, now seen corresponding path program 1 times [2023-11-06 22:18:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:02,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568976026] [2023-11-06 22:18:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:02,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:02,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287071382] [2023-11-06 22:18:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:02,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:02,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:02,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:02,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:18:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:03,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:18:03,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:18:03,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568976026] [2023-11-06 22:18:03,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287071382] [2023-11-06 22:18:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287071382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:03,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:18:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645626615] [2023-11-06 22:18:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:18:03,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:18:03,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:18:03,384 INFO L87 Difference]: Start difference. First operand 1096 states and 1654 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:04,097 INFO L93 Difference]: Finished difference Result 2143 states and 3233 transitions. [2023-11-06 22:18:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:18:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2023-11-06 22:18:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:04,105 INFO L225 Difference]: With dead ends: 2143 [2023-11-06 22:18:04,105 INFO L226 Difference]: Without dead ends: 1105 [2023-11-06 22:18:04,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:04,109 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 296 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:04,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 862 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:18:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2023-11-06 22:18:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1096. [2023-11-06 22:18:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 863 states have (on average 1.3928157589803012) internal successors, (1202), 863 states have internal predecessors, (1202), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-11-06 22:18:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1650 transitions. [2023-11-06 22:18:04,275 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1650 transitions. Word has length 194 [2023-11-06 22:18:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:04,276 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1650 transitions. [2023-11-06 22:18:04,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1650 transitions. [2023-11-06 22:18:04,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:18:04,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:04,279 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:04,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:04,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:18:04,486 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:04,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1591014101, now seen corresponding path program 1 times [2023-11-06 22:18:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405895705] [2023-11-06 22:18:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:04,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:04,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667153096] [2023-11-06 22:18:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:04,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:04,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:04,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:04,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:18:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:04,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:18:04,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:18:04,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405895705] [2023-11-06 22:18:04,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667153096] [2023-11-06 22:18:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667153096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:04,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:04,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149713089] [2023-11-06 22:18:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:04,771 INFO L87 Difference]: Start difference. First operand 1096 states and 1650 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:04,903 INFO L93 Difference]: Finished difference Result 1825 states and 2760 transitions. [2023-11-06 22:18:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:04,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2023-11-06 22:18:04,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:04,911 INFO L225 Difference]: With dead ends: 1825 [2023-11-06 22:18:04,911 INFO L226 Difference]: Without dead ends: 1096 [2023-11-06 22:18:04,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:04,914 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 22 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:04,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 303 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:18:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2023-11-06 22:18:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1096. [2023-11-06 22:18:05,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 863 states have (on average 1.3870220162224798) internal successors, (1197), 863 states have internal predecessors, (1197), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-11-06 22:18:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1645 transitions. [2023-11-06 22:18:05,066 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1645 transitions. Word has length 194 [2023-11-06 22:18:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:05,067 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1645 transitions. [2023-11-06 22:18:05,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:05,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1645 transitions. [2023-11-06 22:18:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:18:05,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:05,070 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:05,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 22:18:05,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:18:05,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:05,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1088549104, now seen corresponding path program 1 times [2023-11-06 22:18:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:05,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979333023] [2023-11-06 22:18:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:05,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:05,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096809148] [2023-11-06 22:18:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:05,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:05,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:05,309 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:05,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:18:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:05,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:18:05,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:18:07,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979333023] [2023-11-06 22:18:07,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096809148] [2023-11-06 22:18:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096809148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:18:07,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310487874] [2023-11-06 22:18:07,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:07,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:07,096 INFO L87 Difference]: Start difference. First operand 1096 states and 1645 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:08,369 INFO L93 Difference]: Finished difference Result 2773 states and 4121 transitions. [2023-11-06 22:18:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:18:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2023-11-06 22:18:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:08,382 INFO L225 Difference]: With dead ends: 2773 [2023-11-06 22:18:08,382 INFO L226 Difference]: Without dead ends: 1735 [2023-11-06 22:18:08,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:08,386 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 154 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:08,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 597 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:18:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2023-11-06 22:18:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1111. [2023-11-06 22:18:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 878 states have (on average 1.387243735763098) internal successors, (1218), 878 states have internal predecessors, (1218), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-11-06 22:18:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1666 transitions. [2023-11-06 22:18:08,549 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1666 transitions. Word has length 194 [2023-11-06 22:18:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:08,550 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1666 transitions. [2023-11-06 22:18:08,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1666 transitions. [2023-11-06 22:18:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:18:08,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:08,554 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:08,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:08,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:08,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:08,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1176035117, now seen corresponding path program 1 times [2023-11-06 22:18:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268893927] [2023-11-06 22:18:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:08,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:08,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209481496] [2023-11-06 22:18:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:08,802 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:08,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:18:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:09,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:18:09,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-11-06 22:18:09,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2023-11-06 22:18:09,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268893927] [2023-11-06 22:18:09,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209481496] [2023-11-06 22:18:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209481496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:09,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:09,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-06 22:18:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757046798] [2023-11-06 22:18:09,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:18:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:18:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:18:09,970 INFO L87 Difference]: Start difference. First operand 1111 states and 1666 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) [2023-11-06 22:18:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:10,669 INFO L93 Difference]: Finished difference Result 1507 states and 2207 transitions. [2023-11-06 22:18:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:18:10,669 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) Word has length 195 [2023-11-06 22:18:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:10,675 INFO L225 Difference]: With dead ends: 1507 [2023-11-06 22:18:10,676 INFO L226 Difference]: Without dead ends: 778 [2023-11-06 22:18:10,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=293, Invalid=637, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:18:10,679 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 379 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:10,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 294 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:18:10,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-11-06 22:18:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 413. [2023-11-06 22:18:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 319 states have (on average 1.322884012539185) internal successors, (422), 319 states have internal predecessors, (422), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-06 22:18:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 590 transitions. [2023-11-06 22:18:10,803 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 590 transitions. Word has length 195 [2023-11-06 22:18:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:10,803 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 590 transitions. [2023-11-06 22:18:10,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) [2023-11-06 22:18:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 590 transitions. [2023-11-06 22:18:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:18:10,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:10,806 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:10,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:11,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:18:11,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:11,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1961481114, now seen corresponding path program 1 times [2023-11-06 22:18:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:11,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848170474] [2023-11-06 22:18:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:11,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:11,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:11,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499485495] [2023-11-06 22:18:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:11,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:11,048 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:11,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:18:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:11,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:18:11,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:18:12,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:12,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:12,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848170474] [2023-11-06 22:18:12,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:12,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499485495] [2023-11-06 22:18:12,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499485495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:12,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:12,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:18:12,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930448792] [2023-11-06 22:18:12,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:12,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:18:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:12,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:18:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:18:12,232 INFO L87 Difference]: Start difference. First operand 413 states and 590 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:13,020 INFO L93 Difference]: Finished difference Result 855 states and 1219 transitions. [2023-11-06 22:18:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:18:13,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2023-11-06 22:18:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:13,024 INFO L225 Difference]: With dead ends: 855 [2023-11-06 22:18:13,025 INFO L226 Difference]: Without dead ends: 523 [2023-11-06 22:18:13,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:18:13,027 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 212 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:13,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 471 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:18:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-11-06 22:18:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 359. [2023-11-06 22:18:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 265 states have (on average 1.2867924528301886) internal successors, (341), 265 states have internal predecessors, (341), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-06 22:18:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2023-11-06 22:18:13,114 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 195 [2023-11-06 22:18:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:13,114 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2023-11-06 22:18:13,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2023-11-06 22:18:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-06 22:18:13,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:13,117 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:13,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:18:13,324 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:13,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1012821760, now seen corresponding path program 1 times [2023-11-06 22:18:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:13,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354266661] [2023-11-06 22:18:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:13,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:13,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538156747] [2023-11-06 22:18:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:13,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:13,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:13,382 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:13,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:18:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:13,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:18:13,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:18:14,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:14,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354266661] [2023-11-06 22:18:14,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538156747] [2023-11-06 22:18:14,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538156747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:14,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:14,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795460000] [2023-11-06 22:18:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:14,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:14,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:14,686 INFO L87 Difference]: Start difference. First operand 359 states and 509 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:15,074 INFO L93 Difference]: Finished difference Result 799 states and 1130 transitions. [2023-11-06 22:18:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:15,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2023-11-06 22:18:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:15,078 INFO L225 Difference]: With dead ends: 799 [2023-11-06 22:18:15,078 INFO L226 Difference]: Without dead ends: 506 [2023-11-06 22:18:15,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:15,080 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 111 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:15,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 488 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-06 22:18:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 370. [2023-11-06 22:18:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 276 states have (on average 1.289855072463768) internal successors, (356), 276 states have internal predecessors, (356), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-06 22:18:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 524 transitions. [2023-11-06 22:18:15,177 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 524 transitions. Word has length 196 [2023-11-06 22:18:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:15,178 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 524 transitions. [2023-11-06 22:18:15,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 524 transitions. [2023-11-06 22:18:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:18:15,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:15,180 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:15,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:15,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:15,388 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:15,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash -215668520, now seen corresponding path program 1 times [2023-11-06 22:18:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859366223] [2023-11-06 22:18:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:15,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:15,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:15,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330549133] [2023-11-06 22:18:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:15,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:15,421 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:15,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:18:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:15,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:18:15,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:18:17,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859366223] [2023-11-06 22:18:17,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:17,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330549133] [2023-11-06 22:18:17,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330549133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:17,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:17,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:18:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744532971] [2023-11-06 22:18:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:17,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:18:17,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:17,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:18:17,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:18:17,405 INFO L87 Difference]: Start difference. First operand 370 states and 524 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:19,193 INFO L93 Difference]: Finished difference Result 1012 states and 1407 transitions. [2023-11-06 22:18:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:18:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 197 [2023-11-06 22:18:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:19,201 INFO L225 Difference]: With dead ends: 1012 [2023-11-06 22:18:19,202 INFO L226 Difference]: Without dead ends: 717 [2023-11-06 22:18:19,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:18:19,204 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 302 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:19,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 685 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:18:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-06 22:18:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 498. [2023-11-06 22:18:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 404 states have (on average 1.2896039603960396) internal successors, (521), 404 states have internal predecessors, (521), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-06 22:18:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 689 transitions. [2023-11-06 22:18:19,317 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 689 transitions. Word has length 197 [2023-11-06 22:18:19,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:19,317 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 689 transitions. [2023-11-06 22:18:19,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-06 22:18:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 689 transitions. [2023-11-06 22:18:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:18:19,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:19,319 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:19,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:19,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:19,520 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:19,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1804016422, now seen corresponding path program 1 times [2023-11-06 22:18:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:19,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99956567] [2023-11-06 22:18:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:19,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:19,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679648328] [2023-11-06 22:18:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:19,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:19,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:19,553 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:19,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49899a27-de4d-449c-b5e0-eafb783a36fb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process