./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff7b418e097ac71cb07649c78e22d00a4b99c58d62495b13432b9c5d408f3ad9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:53,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:53,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:53,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:53,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:53,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:53,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:53,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:53,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:53,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:53,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:53,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:53,243 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:53,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:53,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:53,245 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:53,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:53,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:53,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:53,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:53,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:53,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:53,250 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:53,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:53,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:53,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:53,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:53,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:53,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:53,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:53,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:53,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:53,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:53,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:53,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:53,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:53,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:53,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:53,258 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:53,259 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_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff7b418e097ac71cb07649c78e22d00a4b99c58d62495b13432b9c5d408f3ad9 [2023-11-19 07:56:53,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:53,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:53,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:53,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:53,686 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:53,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i [2023-11-19 07:56:56,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:57,304 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:57,306 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i [2023-11-19 07:56:57,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/data/18a171a15/bbe78a75385e4b34bc024003066cb4c9/FLAG0574910fd [2023-11-19 07:56:57,341 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/data/18a171a15/bbe78a75385e4b34bc024003066cb4c9 [2023-11-19 07:56:57,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:57,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:57,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:57,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:57,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:57,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:57,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4555bb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57, skipping insertion in model container [2023-11-19 07:56:57,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:57,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:57,605 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_57b15c94-8628-438a-bb61-6f8d8707321c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i[919,932] [2023-11-19 07:56:57,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:57,784 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:57,804 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_57b15c94-8628-438a-bb61-6f8d8707321c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i[919,932] [2023-11-19 07:56:57,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:57,878 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:57,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57 WrapperNode [2023-11-19 07:56:57,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:57,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:57,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:57,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:57,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:57,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:57,989 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 342 [2023-11-19 07:56:57,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:57,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:57,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:57,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:58,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:58,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:58,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:58,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:58,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (1/1) ... [2023-11-19 07:56:58,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:58,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:58,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:58,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:56:58,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:56:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:58,344 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:58,347 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:59,094 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:59,105 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:59,105 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:56:59,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:59 BoogieIcfgContainer [2023-11-19 07:56:59,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:59,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:59,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:59,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:59,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:57" (1/3) ... [2023-11-19 07:56:59,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4af44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:59, skipping insertion in model container [2023-11-19 07:56:59,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:57" (2/3) ... [2023-11-19 07:56:59,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4af44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:59, skipping insertion in model container [2023-11-19 07:56:59,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:59" (3/3) ... [2023-11-19 07:56:59,120 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i [2023-11-19 07:56:59,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:59,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:56:59,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:59,229 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@634c3891, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:59,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:56:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:56:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-19 07:56:59,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:59,280 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:59,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:59,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1561337915, now seen corresponding path program 1 times [2023-11-19 07:56:59,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540766852] [2023-11-19 07:56:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:59,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:59,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540766852] [2023-11-19 07:56:59,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:56:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648919394] [2023-11-19 07:56:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:59,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:59,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:59,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:57:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:57:00,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-11-19 07:57:00,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:00,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648919394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:00,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:00,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653223556] [2023-11-19 07:57:00,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:00,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:00,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:00,372 INFO L87 Difference]: Start difference. First operand has 136 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-11-19 07:57:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:00,421 INFO L93 Difference]: Finished difference Result 265 states and 478 transitions. [2023-11-19 07:57:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:00,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2023-11-19 07:57:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:00,435 INFO L225 Difference]: With dead ends: 265 [2023-11-19 07:57:00,436 INFO L226 Difference]: Without dead ends: 132 [2023-11-19 07:57:00,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:00,445 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:00,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-19 07:57:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-19 07:57:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:57:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 211 transitions. [2023-11-19 07:57:00,520 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 211 transitions. Word has length 297 [2023-11-19 07:57:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 211 transitions. [2023-11-19 07:57:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-11-19 07:57:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 211 transitions. [2023-11-19 07:57:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-19 07:57:00,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:00,531 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:00,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:00,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:57:00,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:00,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1584104123, now seen corresponding path program 1 times [2023-11-19 07:57:00,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:00,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733345995] [2023-11-19 07:57:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:00,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:00,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738437864] [2023-11-19 07:57:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:00,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:00,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:00,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:01,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:57:01,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 701 proven. 105 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2023-11-19 07:57:01,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 132 proven. 9 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-11-19 07:57:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:01,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733345995] [2023-11-19 07:57:01,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:01,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738437864] [2023-11-19 07:57:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738437864] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:01,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:57:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-11-19 07:57:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889076771] [2023-11-19 07:57:01,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:01,835 INFO L87 Difference]: Start difference. First operand 132 states and 211 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2023-11-19 07:57:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:02,524 INFO L93 Difference]: Finished difference Result 272 states and 429 transitions. [2023-11-19 07:57:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:57:02,525 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) Word has length 297 [2023-11-19 07:57:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:02,541 INFO L225 Difference]: With dead ends: 272 [2023-11-19 07:57:02,541 INFO L226 Difference]: Without dead ends: 143 [2023-11-19 07:57:02,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:57:02,546 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 153 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:02,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 778 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:57:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-19 07:57:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2023-11-19 07:57:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.348314606741573) internal successors, (120), 89 states have internal predecessors, (120), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:57:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2023-11-19 07:57:02,593 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 297 [2023-11-19 07:57:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:02,595 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2023-11-19 07:57:02,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2023-11-19 07:57:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2023-11-19 07:57:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-19 07:57:02,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:02,602 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:02,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:02,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:02,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:02,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash -203175314, now seen corresponding path program 1 times [2023-11-19 07:57:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335382993] [2023-11-19 07:57:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:02,939 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:02,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422764843] [2023-11-19 07:57:02,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:02,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:02,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:02,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:02,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:57:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:03,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:57:03,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1566 proven. 54 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2023-11-19 07:57:03,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 351 proven. 63 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-11-19 07:57:04,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:04,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335382993] [2023-11-19 07:57:04,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:04,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422764843] [2023-11-19 07:57:04,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422764843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:04,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:57:04,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-11-19 07:57:04,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685934128] [2023-11-19 07:57:04,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:04,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:57:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:57:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:57:04,222 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-19 07:57:05,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:05,172 INFO L93 Difference]: Finished difference Result 295 states and 442 transitions. [2023-11-19 07:57:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:57:05,173 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 298 [2023-11-19 07:57:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:05,177 INFO L225 Difference]: With dead ends: 295 [2023-11-19 07:57:05,177 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 07:57:05,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=389, Invalid=871, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 07:57:05,182 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 521 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:05,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 478 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:57:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 07:57:05,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-11-19 07:57:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 98 states have internal predecessors, (128), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:57:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 224 transitions. [2023-11-19 07:57:05,240 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 224 transitions. Word has length 298 [2023-11-19 07:57:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:05,242 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 224 transitions. [2023-11-19 07:57:05,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-19 07:57:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 224 transitions. [2023-11-19 07:57:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-19 07:57:05,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:05,250 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:05,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:05,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:05,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:05,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1791523216, now seen corresponding path program 1 times [2023-11-19 07:57:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:05,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287962053] [2023-11-19 07:57:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:05,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505263682] [2023-11-19 07:57:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:05,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:05,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:05,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:05,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:57:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:05,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 07:57:05,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1376 proven. 549 refuted. 0 times theorem prover too weak. 2587 trivial. 0 not checked. [2023-11-19 07:57:10,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-19 07:57:11,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287962053] [2023-11-19 07:57:11,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:11,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505263682] [2023-11-19 07:57:11,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505263682] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:11,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:11,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [22] total 25 [2023-11-19 07:57:11,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059976975] [2023-11-19 07:57:11,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:57:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:57:11,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:57:11,675 INFO L87 Difference]: Start difference. First operand 153 states and 224 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-19 07:57:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:12,131 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2023-11-19 07:57:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:12,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2023-11-19 07:57:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:12,136 INFO L225 Difference]: With dead ends: 367 [2023-11-19 07:57:12,137 INFO L226 Difference]: Without dead ends: 217 [2023-11-19 07:57:12,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:57:12,143 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 108 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:12,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 822 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:57:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-19 07:57:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 202. [2023-11-19 07:57:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 138 states have internal predecessors, (182), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-19 07:57:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 294 transitions. [2023-11-19 07:57:12,194 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 294 transitions. Word has length 298 [2023-11-19 07:57:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:12,203 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 294 transitions. [2023-11-19 07:57:12,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-19 07:57:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 294 transitions. [2023-11-19 07:57:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-19 07:57:12,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:12,210 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:12,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:12,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:12,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:12,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1533357778, now seen corresponding path program 1 times [2023-11-19 07:57:12,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:12,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941790778] [2023-11-19 07:57:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:12,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:12,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020174756] [2023-11-19 07:57:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:12,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:12,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:12,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:57:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:12,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:57:12,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-19 07:57:12,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941790778] [2023-11-19 07:57:12,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020174756] [2023-11-19 07:57:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020174756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:12,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:12,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517254279] [2023-11-19 07:57:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:12,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:12,758 INFO L87 Difference]: Start difference. First operand 202 states and 294 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-19 07:57:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:12,799 INFO L93 Difference]: Finished difference Result 392 states and 570 transitions. [2023-11-19 07:57:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2023-11-19 07:57:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:12,804 INFO L225 Difference]: With dead ends: 392 [2023-11-19 07:57:12,804 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 07:57:12,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:12,806 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 13 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 397 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 [2023-11-19 07:57:12,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 397 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 07:57:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-19 07:57:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 128 states have (on average 1.2890625) internal successors, (165), 129 states have internal predecessors, (165), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-19 07:57:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 277 transitions. [2023-11-19 07:57:12,856 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 277 transitions. Word has length 298 [2023-11-19 07:57:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:12,858 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 277 transitions. [2023-11-19 07:57:12,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-19 07:57:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 277 transitions. [2023-11-19 07:57:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-19 07:57:12,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:12,866 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:12,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:13,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:13,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1492326830, now seen corresponding path program 1 times [2023-11-19 07:57:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517250086] [2023-11-19 07:57:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835635110] [2023-11-19 07:57:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:13,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:13,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:57:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:13,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-19 07:57:13,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:13,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517250086] [2023-11-19 07:57:13,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835635110] [2023-11-19 07:57:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835635110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:13,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:13,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625476709] [2023-11-19 07:57:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:13,414 INFO L87 Difference]: Start difference. First operand 193 states and 277 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-19 07:57:13,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:13,456 INFO L93 Difference]: Finished difference Result 364 states and 523 transitions. [2023-11-19 07:57:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:13,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2023-11-19 07:57:13,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:13,460 INFO L225 Difference]: With dead ends: 364 [2023-11-19 07:57:13,460 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 07:57:13,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:13,463 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 15 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:13,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 386 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 07:57:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-19 07:57:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 110 states have internal predecessors, (136), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-19 07:57:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 248 transitions. [2023-11-19 07:57:13,499 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 248 transitions. Word has length 298 [2023-11-19 07:57:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:13,500 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 248 transitions. [2023-11-19 07:57:13,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-19 07:57:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 248 transitions. [2023-11-19 07:57:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-11-19 07:57:13,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:13,504 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:13,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:57:13,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:13,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,725 INFO L85 PathProgramCache]: Analyzing trace with hash -864542270, now seen corresponding path program 1 times [2023-11-19 07:57:13,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144379474] [2023-11-19 07:57:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:13,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552055193] [2023-11-19 07:57:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:13,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:13,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:13,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b15c94-8628-438a-bb61-6f8d8707321c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:57:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 07:57:14,098 INFO L285 TraceCheckSpWp]: Computing forward predicates...