./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-76.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_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/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_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-76.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/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_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/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 f602e0f7734a1905046e2fba128f181bd659d39499d3aad0dd0d24704f376d3a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:52,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:52,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:52,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:52,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:52,301 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:52,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:52,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:52,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:52,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:52,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:52,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:52,316 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:52,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:52,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:52,320 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:52,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:52,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:52,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:52,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:52,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:52,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:52,323 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:52,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:52,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:52,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:52,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:52,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:52,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:52,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:52,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:52,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:52,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:52,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:52,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:52,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:52,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:52,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:52,331 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:52,331 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_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f602e0f7734a1905046e2fba128f181bd659d39499d3aad0dd0d24704f376d3a [2023-11-19 08:02:52,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:52,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:52,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:52,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:52,658 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:52,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-76.i [2023-11-19 08:02:55,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:56,103 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:56,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-76.i [2023-11-19 08:02:56,122 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/data/a5cbc8e3a/c44b6ed547a946b69b6dcaef6b87ace9/FLAG26f3207d8 [2023-11-19 08:02:56,138 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/data/a5cbc8e3a/c44b6ed547a946b69b6dcaef6b87ace9 [2023-11-19 08:02:56,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:56,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:56,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:56,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:56,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:56,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:56,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e10cc09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56, skipping insertion in model container [2023-11-19 08:02:56,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:56,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:56,423 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_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-76.i[916,929] [2023-11-19 08:02:56,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:56,693 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:56,707 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_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-76.i[916,929] [2023-11-19 08:02:56,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:56,900 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:56,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56 WrapperNode [2023-11-19 08:02:56,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:56,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:56,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:56,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:56,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:56,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,104 INFO L138 Inliner]: procedures = 26, calls = 127, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 962 [2023-11-19 08:02:57,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:57,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:57,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:57,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:57,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:57,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:57,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:57,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:57,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (1/1) ... [2023-11-19 08:02:57,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:57,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:57,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:57,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:02:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:02:57,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:57,563 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:57,565 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:59,040 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:59,055 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:59,056 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:02:59,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:59 BoogieIcfgContainer [2023-11-19 08:02:59,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:59,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:59,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:59,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:59,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:56" (1/3) ... [2023-11-19 08:02:59,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6a731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:59, skipping insertion in model container [2023-11-19 08:02:59,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:56" (2/3) ... [2023-11-19 08:02:59,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6a731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:59, skipping insertion in model container [2023-11-19 08:02:59,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:59" (3/3) ... [2023-11-19 08:02:59,075 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-76.i [2023-11-19 08:02:59,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:59,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:59,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:59,160 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;@3bf9524e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:59,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:02:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 241 states have (on average 1.6348547717842323) internal successors, (394), 242 states have internal predecessors, (394), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 08:02:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-11-19 08:02:59,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:59,220 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:59,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:59,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash -337458249, now seen corresponding path program 1 times [2023-11-19 08:02:59,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:59,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475064095] [2023-11-19 08:02:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:59,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:59,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475064095] [2023-11-19 08:02:59,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:02:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369903970] [2023-11-19 08:02:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:59,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:59,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:59,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:59,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:03:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:03:00,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 25538 trivial. 0 not checked. [2023-11-19 08:03:00,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:00,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369903970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:00,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:00,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685040767] [2023-11-19 08:03:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:00,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:03:00,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:03:00,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:03:00,592 INFO L87 Difference]: Start difference. First operand has 358 states, 241 states have (on average 1.6348547717842323) internal successors, (394), 242 states have internal predecessors, (394), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) Second operand has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-19 08:03:00,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:00,683 INFO L93 Difference]: Finished difference Result 706 states and 1346 transitions. [2023-11-19 08:03:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:03:00,686 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) Word has length 727 [2023-11-19 08:03:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:00,700 INFO L225 Difference]: With dead ends: 706 [2023-11-19 08:03:00,700 INFO L226 Difference]: Without dead ends: 351 [2023-11-19 08:03:00,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 726 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 08:03:00,713 INFO L413 NwaCegarLoop]: 603 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, 603 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 08:03:00,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-19 08:03:00,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-11-19 08:03:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 235 states have (on average 1.5957446808510638) internal successors, (375), 235 states have internal predecessors, (375), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 08:03:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 603 transitions. [2023-11-19 08:03:00,878 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 603 transitions. Word has length 727 [2023-11-19 08:03:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:00,880 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 603 transitions. [2023-11-19 08:03:00,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-19 08:03:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 603 transitions. [2023-11-19 08:03:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-11-19 08:03:00,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:00,937 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:00,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:01,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:03:01,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:01,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:01,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1068777029, now seen corresponding path program 1 times [2023-11-19 08:03:01,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:01,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490885523] [2023-11-19 08:03:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:01,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:01,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:01,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712283226] [2023-11-19 08:03:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:01,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:01,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:01,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:01,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:03:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:01,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:01,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:02,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:02,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490885523] [2023-11-19 08:03:02,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712283226] [2023-11-19 08:03:02,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712283226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:02,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:02,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721576686] [2023-11-19 08:03:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:02,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:02,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:02,013 INFO L87 Difference]: Start difference. First operand 351 states and 603 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:02,076 INFO L93 Difference]: Finished difference Result 699 states and 1203 transitions. [2023-11-19 08:03:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-11-19 08:03:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:02,086 INFO L225 Difference]: With dead ends: 699 [2023-11-19 08:03:02,086 INFO L226 Difference]: Without dead ends: 351 [2023-11-19 08:03:02,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 08:03:02,090 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:02,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1197 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-19 08:03:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-11-19 08:03:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 235 states have (on average 1.5914893617021277) internal successors, (374), 235 states have internal predecessors, (374), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-19 08:03:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 602 transitions. [2023-11-19 08:03:02,142 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 602 transitions. Word has length 728 [2023-11-19 08:03:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:02,147 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 602 transitions. [2023-11-19 08:03:02,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 602 transitions. [2023-11-19 08:03:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-19 08:03:02,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:02,162 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:02,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:02,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:02,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:02,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1002956072, now seen corresponding path program 1 times [2023-11-19 08:03:02,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:02,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77410351] [2023-11-19 08:03:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:02,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:02,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:02,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215871081] [2023-11-19 08:03:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:02,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:02,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:02,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:02,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:03:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:03,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:03,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:03,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:03,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77410351] [2023-11-19 08:03:03,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:03,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215871081] [2023-11-19 08:03:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215871081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:03,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041864332] [2023-11-19 08:03:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:03,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:03,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:03,249 INFO L87 Difference]: Start difference. First operand 351 states and 602 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:03,530 INFO L93 Difference]: Finished difference Result 1375 states and 2368 transitions. [2023-11-19 08:03:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:03,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 731 [2023-11-19 08:03:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:03,543 INFO L225 Difference]: With dead ends: 1375 [2023-11-19 08:03:03,543 INFO L226 Difference]: Without dead ends: 1027 [2023-11-19 08:03:03,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:03,547 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 1088 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:03,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 3208 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:03:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-11-19 08:03:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 726. [2023-11-19 08:03:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 593 states have (on average 1.7048903878583475) internal successors, (1011), 594 states have internal predecessors, (1011), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2023-11-19 08:03:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1271 transitions. [2023-11-19 08:03:03,654 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1271 transitions. Word has length 731 [2023-11-19 08:03:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:03,657 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1271 transitions. [2023-11-19 08:03:03,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1271 transitions. [2023-11-19 08:03:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-19 08:03:03,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:03,667 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:03,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:03,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:03,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:03,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:03,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1811820070, now seen corresponding path program 1 times [2023-11-19 08:03:03,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:03,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018238054] [2023-11-19 08:03:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:03,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:03,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:03,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050104580] [2023-11-19 08:03:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:03,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:03,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:04,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:04,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:03:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:04,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:04,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:04,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:04,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:04,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018238054] [2023-11-19 08:03:04,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:04,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050104580] [2023-11-19 08:03:04,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050104580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:04,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:04,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:04,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382029695] [2023-11-19 08:03:04,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:04,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:04,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:04,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:04,646 INFO L87 Difference]: Start difference. First operand 726 states and 1271 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:04,766 INFO L93 Difference]: Finished difference Result 2056 states and 3613 transitions. [2023-11-19 08:03:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 731 [2023-11-19 08:03:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:04,779 INFO L225 Difference]: With dead ends: 2056 [2023-11-19 08:03:04,780 INFO L226 Difference]: Without dead ends: 1333 [2023-11-19 08:03:04,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:04,783 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 379 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:04,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 2005 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-11-19 08:03:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1330. [2023-11-19 08:03:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1135 states have (on average 1.7154185022026431) internal successors, (1947), 1138 states have internal predecessors, (1947), 190 states have call successors, (190), 4 states have call predecessors, (190), 4 states have return successors, (190), 187 states have call predecessors, (190), 190 states have call successors, (190) [2023-11-19 08:03:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2327 transitions. [2023-11-19 08:03:04,881 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 2327 transitions. Word has length 731 [2023-11-19 08:03:04,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:04,883 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 2327 transitions. [2023-11-19 08:03:04,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 2327 transitions. [2023-11-19 08:03:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:04,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:04,894 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:04,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:05,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:05,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:05,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash -305907531, now seen corresponding path program 1 times [2023-11-19 08:03:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:05,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326647808] [2023-11-19 08:03:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:05,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:05,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:05,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233529898] [2023-11-19 08:03:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:05,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:05,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:05,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:05,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:03:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:03:05,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:05,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:05,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:05,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326647808] [2023-11-19 08:03:05,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233529898] [2023-11-19 08:03:05,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233529898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:05,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:05,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211179324] [2023-11-19 08:03:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:05,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:05,866 INFO L87 Difference]: Start difference. First operand 1330 states and 2327 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:05,943 INFO L93 Difference]: Finished difference Result 2713 states and 4747 transitions. [2023-11-19 08:03:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 08:03:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:05,956 INFO L225 Difference]: With dead ends: 2713 [2023-11-19 08:03:05,956 INFO L226 Difference]: Without dead ends: 1386 [2023-11-19 08:03:05,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:05,961 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 8 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:05,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1788 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2023-11-19 08:03:06,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1346. [2023-11-19 08:03:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1151 states have (on average 1.7124239791485665) internal successors, (1971), 1154 states have internal predecessors, (1971), 190 states have call successors, (190), 4 states have call predecessors, (190), 4 states have return successors, (190), 187 states have call predecessors, (190), 190 states have call successors, (190) [2023-11-19 08:03:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2351 transitions. [2023-11-19 08:03:06,052 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2351 transitions. Word has length 732 [2023-11-19 08:03:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:06,053 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 2351 transitions. [2023-11-19 08:03:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2351 transitions. [2023-11-19 08:03:06,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:06,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:06,064 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:06,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:06,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:06,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:06,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1960473655, now seen corresponding path program 1 times [2023-11-19 08:03:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:06,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908254421] [2023-11-19 08:03:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:06,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:06,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:06,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898224305] [2023-11-19 08:03:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:06,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:06,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:06,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:03:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:07,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:07,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:08,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:08,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908254421] [2023-11-19 08:03:08,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898224305] [2023-11-19 08:03:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898224305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:08,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:08,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:08,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494150946] [2023-11-19 08:03:08,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:08,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:08,306 INFO L87 Difference]: Start difference. First operand 1346 states and 2351 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:08,866 INFO L93 Difference]: Finished difference Result 4032 states and 7047 transitions. [2023-11-19 08:03:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:08,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 08:03:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:08,888 INFO L225 Difference]: With dead ends: 4032 [2023-11-19 08:03:08,889 INFO L226 Difference]: Without dead ends: 2689 [2023-11-19 08:03:08,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:08,895 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 218 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:08,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1554 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:03:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2023-11-19 08:03:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2687. [2023-11-19 08:03:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2298 states have (on average 1.711923411662315) internal successors, (3934), 2304 states have internal predecessors, (3934), 380 states have call successors, (380), 8 states have call predecessors, (380), 8 states have return successors, (380), 374 states have call predecessors, (380), 380 states have call successors, (380) [2023-11-19 08:03:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 4694 transitions. [2023-11-19 08:03:09,152 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 4694 transitions. Word has length 732 [2023-11-19 08:03:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:09,154 INFO L495 AbstractCegarLoop]: Abstraction has 2687 states and 4694 transitions. [2023-11-19 08:03:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 4694 transitions. [2023-11-19 08:03:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:09,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:09,165 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:09,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:09,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:09,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:09,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1633429063, now seen corresponding path program 1 times [2023-11-19 08:03:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:09,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992292302] [2023-11-19 08:03:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:09,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:09,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692742492] [2023-11-19 08:03:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:09,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:09,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:09,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:09,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:03:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:10,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:10,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:10,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992292302] [2023-11-19 08:03:10,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692742492] [2023-11-19 08:03:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692742492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917287917] [2023-11-19 08:03:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:10,203 INFO L87 Difference]: Start difference. First operand 2687 states and 4694 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:10,361 INFO L93 Difference]: Finished difference Result 7647 states and 13398 transitions. [2023-11-19 08:03:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 08:03:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:10,396 INFO L225 Difference]: With dead ends: 7647 [2023-11-19 08:03:10,397 INFO L226 Difference]: Without dead ends: 4963 [2023-11-19 08:03:10,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 730 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 08:03:10,406 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 319 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:10,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1428 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4963 states. [2023-11-19 08:03:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4963 to 4953. [2023-11-19 08:03:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 4444 states have (on average 1.7304230423042304) internal successors, (7690), 4458 states have internal predecessors, (7690), 492 states have call successors, (492), 16 states have call predecessors, (492), 16 states have return successors, (492), 478 states have call predecessors, (492), 492 states have call successors, (492) [2023-11-19 08:03:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 8674 transitions. [2023-11-19 08:03:10,783 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 8674 transitions. Word has length 732 [2023-11-19 08:03:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:10,785 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 8674 transitions. [2023-11-19 08:03:10,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 8674 transitions. [2023-11-19 08:03:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:10,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:10,799 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:10,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:11,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:03:11,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:11,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1042563319, now seen corresponding path program 1 times [2023-11-19 08:03:11,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:11,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208643233] [2023-11-19 08:03:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:11,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:11,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:11,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145501215] [2023-11-19 08:03:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:11,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:11,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:11,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:11,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:03:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:11,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:11,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:11,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208643233] [2023-11-19 08:03:11,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145501215] [2023-11-19 08:03:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145501215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:11,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962864781] [2023-11-19 08:03:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:11,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:11,749 INFO L87 Difference]: Start difference. First operand 4953 states and 8674 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:12,099 INFO L93 Difference]: Finished difference Result 13817 states and 24082 transitions. [2023-11-19 08:03:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:12,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 08:03:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:12,165 INFO L225 Difference]: With dead ends: 13817 [2023-11-19 08:03:12,165 INFO L226 Difference]: Without dead ends: 8867 [2023-11-19 08:03:12,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 730 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 08:03:12,181 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 267 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:12,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1432 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:12,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8867 states. [2023-11-19 08:03:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8867 to 8861. [2023-11-19 08:03:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8861 states, 8072 states have (on average 1.708374628344896) internal successors, (13790), 8102 states have internal predecessors, (13790), 756 states have call successors, (756), 32 states have call predecessors, (756), 32 states have return successors, (756), 726 states have call predecessors, (756), 756 states have call successors, (756) [2023-11-19 08:03:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8861 states to 8861 states and 15302 transitions. [2023-11-19 08:03:12,807 INFO L78 Accepts]: Start accepts. Automaton has 8861 states and 15302 transitions. Word has length 732 [2023-11-19 08:03:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:12,809 INFO L495 AbstractCegarLoop]: Abstraction has 8861 states and 15302 transitions. [2023-11-19 08:03:12,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8861 states and 15302 transitions. [2023-11-19 08:03:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:12,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:12,827 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:12,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:13,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 08:03:13,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:13,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:13,052 INFO L85 PathProgramCache]: Analyzing trace with hash -868479239, now seen corresponding path program 1 times [2023-11-19 08:03:13,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368132849] [2023-11-19 08:03:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:13,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:13,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759242493] [2023-11-19 08:03:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:13,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:13,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:13,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:13,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:03:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:13,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:13,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368132849] [2023-11-19 08:03:13,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:13,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759242493] [2023-11-19 08:03:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759242493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:13,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:13,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891733875] [2023-11-19 08:03:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:13,889 INFO L87 Difference]: Start difference. First operand 8861 states and 15302 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:14,388 INFO L93 Difference]: Finished difference Result 25061 states and 43092 transitions. [2023-11-19 08:03:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:14,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 08:03:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:14,457 INFO L225 Difference]: With dead ends: 25061 [2023-11-19 08:03:14,458 INFO L226 Difference]: Without dead ends: 16203 [2023-11-19 08:03:14,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 730 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 08:03:14,478 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 445 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:14,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1188 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16203 states. [2023-11-19 08:03:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16203 to 13773. [2023-11-19 08:03:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13773 states, 12984 states have (on average 1.7238139248305606) internal successors, (22382), 13014 states have internal predecessors, (22382), 756 states have call successors, (756), 32 states have call predecessors, (756), 32 states have return successors, (756), 726 states have call predecessors, (756), 756 states have call successors, (756) [2023-11-19 08:03:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13773 states to 13773 states and 23894 transitions. [2023-11-19 08:03:15,259 INFO L78 Accepts]: Start accepts. Automaton has 13773 states and 23894 transitions. Word has length 732 [2023-11-19 08:03:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:15,261 INFO L495 AbstractCegarLoop]: Abstraction has 13773 states and 23894 transitions. [2023-11-19 08:03:15,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 13773 states and 23894 transitions. [2023-11-19 08:03:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:15,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:15,287 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:15,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 08:03:15,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:15,511 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:15,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash -359006149, now seen corresponding path program 1 times [2023-11-19 08:03:15,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:15,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86497345] [2023-11-19 08:03:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:15,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040601962] [2023-11-19 08:03:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:15,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:15,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:15,610 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:15,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:03:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:03:16,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:17,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:17,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86497345] [2023-11-19 08:03:17,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:17,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040601962] [2023-11-19 08:03:17,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040601962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:17,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:17,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:17,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645037673] [2023-11-19 08:03:17,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:17,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:17,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:17,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:17,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:17,726 INFO L87 Difference]: Start difference. First operand 13773 states and 23894 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 5 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:19,935 INFO L93 Difference]: Finished difference Result 55271 states and 95921 transitions. [2023-11-19 08:03:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:19,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 5 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 08:03:19,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:20,040 INFO L225 Difference]: With dead ends: 55271 [2023-11-19 08:03:20,040 INFO L226 Difference]: Without dead ends: 39597 [2023-11-19 08:03:20,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:20,071 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1332 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:20,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 2971 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:03:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39597 states. [2023-11-19 08:03:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39597 to 32957. [2023-11-19 08:03:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32957 states, 31380 states have (on average 1.7361376673040152) internal successors, (54480), 31440 states have internal predecessors, (54480), 1512 states have call successors, (1512), 64 states have call predecessors, (1512), 64 states have return successors, (1512), 1452 states have call predecessors, (1512), 1512 states have call successors, (1512) [2023-11-19 08:03:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32957 states to 32957 states and 57504 transitions. [2023-11-19 08:03:21,820 INFO L78 Accepts]: Start accepts. Automaton has 32957 states and 57504 transitions. Word has length 732 [2023-11-19 08:03:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:21,822 INFO L495 AbstractCegarLoop]: Abstraction has 32957 states and 57504 transitions. [2023-11-19 08:03:21,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 5 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 32957 states and 57504 transitions. [2023-11-19 08:03:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:21,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:21,866 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:21,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:22,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:03:22,092 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:22,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:22,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1640675587, now seen corresponding path program 1 times [2023-11-19 08:03:22,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:22,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064502267] [2023-11-19 08:03:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:22,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:22,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:22,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730663590] [2023-11-19 08:03:22,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:22,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:22,227 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:22,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:03:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:22,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-19 08:03:22,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064502267] [2023-11-19 08:03:22,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:22,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730663590] [2023-11-19 08:03:22,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730663590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118263764] [2023-11-19 08:03:22,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:22,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:22,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:22,995 INFO L87 Difference]: Start difference. First operand 32957 states and 57504 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:24,096 INFO L93 Difference]: Finished difference Result 73075 states and 128383 transitions. [2023-11-19 08:03:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 732 [2023-11-19 08:03:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:24,304 INFO L225 Difference]: With dead ends: 73075 [2023-11-19 08:03:24,304 INFO L226 Difference]: Without dead ends: 40121 [2023-11-19 08:03:24,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:24,351 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 566 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:24,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 2069 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:03:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40121 states. [2023-11-19 08:03:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40121 to 37349. [2023-11-19 08:03:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37349 states, 36268 states have (on average 1.7654130362854308) internal successors, (64028), 36296 states have internal predecessors, (64028), 1032 states have call successors, (1032), 48 states have call predecessors, (1032), 48 states have return successors, (1032), 1004 states have call predecessors, (1032), 1032 states have call successors, (1032) [2023-11-19 08:03:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37349 states to 37349 states and 66092 transitions. [2023-11-19 08:03:25,754 INFO L78 Accepts]: Start accepts. Automaton has 37349 states and 66092 transitions. Word has length 732 [2023-11-19 08:03:25,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:25,756 INFO L495 AbstractCegarLoop]: Abstraction has 37349 states and 66092 transitions. [2023-11-19 08:03:25,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-19 08:03:25,756 INFO L276 IsEmpty]: Start isEmpty. Operand 37349 states and 66092 transitions. [2023-11-19 08:03:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:25,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:25,786 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:25,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-19 08:03:26,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:03:26,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:26,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash -260336389, now seen corresponding path program 1 times [2023-11-19 08:03:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518086157] [2023-11-19 08:03:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:26,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:26,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767124552] [2023-11-19 08:03:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:26,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:26,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:26,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:03:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:03:26,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 6189 proven. 45 refuted. 0 times theorem prover too weak. 19530 trivial. 0 not checked. [2023-11-19 08:03:27,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 294 proven. 45 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-19 08:03:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:27,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518086157] [2023-11-19 08:03:27,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:27,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767124552] [2023-11-19 08:03:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767124552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:03:27,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:03:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-19 08:03:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413425416] [2023-11-19 08:03:27,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:27,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:03:27,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:03:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:27,936 INFO L87 Difference]: Start difference. First operand 37349 states and 66092 transitions. Second operand has 12 states, 12 states have (on average 19.5) internal successors, (234), 12 states have internal predecessors, (234), 3 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2023-11-19 08:03:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:32,116 INFO L93 Difference]: Finished difference Result 105459 states and 182715 transitions. [2023-11-19 08:03:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 08:03:32,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.5) internal successors, (234), 12 states have internal predecessors, (234), 3 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) Word has length 732 [2023-11-19 08:03:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:32,277 INFO L225 Difference]: With dead ends: 105459 [2023-11-19 08:03:32,277 INFO L226 Difference]: Without dead ends: 68113 [2023-11-19 08:03:32,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1479 GetRequests, 1453 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2023-11-19 08:03:32,313 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1491 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:32,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 2677 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 08:03:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68113 states. [2023-11-19 08:03:34,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68113 to 54909. [2023-11-19 08:03:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54909 states, 52840 states have (on average 1.7153671461014384) internal successors, (90640), 52900 states have internal predecessors, (90640), 1968 states have call successors, (1968), 100 states have call predecessors, (1968), 100 states have return successors, (1968), 1908 states have call predecessors, (1968), 1968 states have call successors, (1968) [2023-11-19 08:03:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54909 states to 54909 states and 94576 transitions. [2023-11-19 08:03:34,734 INFO L78 Accepts]: Start accepts. Automaton has 54909 states and 94576 transitions. Word has length 732 [2023-11-19 08:03:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:34,752 INFO L495 AbstractCegarLoop]: Abstraction has 54909 states and 94576 transitions. [2023-11-19 08:03:34,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.5) internal successors, (234), 12 states have internal predecessors, (234), 3 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2023-11-19 08:03:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 54909 states and 94576 transitions. [2023-11-19 08:03:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-19 08:03:34,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:34,815 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:34,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-19 08:03:35,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:03:35,035 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:35,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1667936313, now seen corresponding path program 1 times [2023-11-19 08:03:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151699676] [2023-11-19 08:03:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:35,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:35,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142633938] [2023-11-19 08:03:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:35,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:35,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6b8161-36fa-4cb2-b100-a38aa5d7dcdd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 08:03:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:03:35,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 6189 proven. 45 refuted. 0 times theorem prover too weak. 19530 trivial. 0 not checked. [2023-11-19 08:03:36,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 294 proven. 45 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-19 08:03:38,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:38,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151699676] [2023-11-19 08:03:38,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:38,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142633938] [2023-11-19 08:03:38,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142633938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:03:38,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:03:38,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11