./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-47.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/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_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/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_2f8de340-e183-4574-bcb8-368a72f61ac2/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 420537b9b13760dd610d470b3d7843b58ac95d81a28cc2456f8b6dc502272279 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:50,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:51,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:49:51,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:51,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:51,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:51,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:51,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:51,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:51,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:51,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:51,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:51,080 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:51,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:51,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:51,082 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:51,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:51,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:51,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:51,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:51,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:51,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:51,088 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:51,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:51,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:51,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:51,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:51,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:51,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:51,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:51,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:51,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:51,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:51,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:51,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:51,097 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:51,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:51,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:51,098 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:51,099 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_2f8de340-e183-4574-bcb8-368a72f61ac2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 420537b9b13760dd610d470b3d7843b58ac95d81a28cc2456f8b6dc502272279 [2023-11-19 07:49:51,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:51,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:51,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:51,461 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:51,462 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:51,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-47.i [2023-11-19 07:49:54,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:54,808 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:54,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-47.i [2023-11-19 07:49:54,829 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/data/0580244de/841c63e3fe1b4bbf9ee079d8980a7ea7/FLAG1df9bfef5 [2023-11-19 07:49:54,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/data/0580244de/841c63e3fe1b4bbf9ee079d8980a7ea7 [2023-11-19 07:49:54,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:54,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:54,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:54,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:54,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:54,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:54" (1/1) ... [2023-11-19 07:49:54,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a865d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:54, skipping insertion in model container [2023-11-19 07:49:54,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:54" (1/1) ... [2023-11-19 07:49:54,905 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:55,058 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_2f8de340-e183-4574-bcb8-368a72f61ac2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-47.i[916,929] [2023-11-19 07:49:55,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:55,207 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:55,220 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_2f8de340-e183-4574-bcb8-368a72f61ac2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-47.i[916,929] [2023-11-19 07:49:55,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:55,319 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:55,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55 WrapperNode [2023-11-19 07:49:55,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:55,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:55,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:55,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:55,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,416 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 406 [2023-11-19 07:49:55,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:55,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:55,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:55,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:55,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:55,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:55,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:55,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:55,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (1/1) ... [2023-11-19 07:49:55,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:55,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:55,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:49:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:49:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:55,787 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:55,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:56,604 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:56,621 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:56,621 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:49:56,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:56 BoogieIcfgContainer [2023-11-19 07:49:56,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:56,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:56,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:56,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:56,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:54" (1/3) ... [2023-11-19 07:49:56,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cb51a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:56, skipping insertion in model container [2023-11-19 07:49:56,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:55" (2/3) ... [2023-11-19 07:49:56,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cb51a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:56, skipping insertion in model container [2023-11-19 07:49:56,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:56" (3/3) ... [2023-11-19 07:49:56,637 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-47.i [2023-11-19 07:49:56,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:56,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:49:56,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:56,756 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;@614d1885, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:56,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:49:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 105 states have internal predecessors, (158), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-19 07:49:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-19 07:49:56,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:56,792 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:56,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:56,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash -678052246, now seen corresponding path program 1 times [2023-11-19 07:49:56,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:56,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097145151] [2023-11-19 07:49:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:56,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:57,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097145151] [2023-11-19 07:49:57,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:49:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449279890] [2023-11-19 07:49:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:57,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:57,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:57,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:57,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:49:57,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2023-11-19 07:49:57,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449279890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:57,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761701495] [2023-11-19 07:49:57,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:57,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:49:57,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:49:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:57,782 INFO L87 Difference]: Start difference. First operand has 163 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 105 states have internal predecessors, (158), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-19 07:49:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:57,838 INFO L93 Difference]: Finished difference Result 319 states and 590 transitions. [2023-11-19 07:49:57,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:49:57,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) Word has length 347 [2023-11-19 07:49:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:57,852 INFO L225 Difference]: With dead ends: 319 [2023-11-19 07:49:57,852 INFO L226 Difference]: Without dead ends: 159 [2023-11-19 07:49:57,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:57,861 INFO L413 NwaCegarLoop]: 259 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, 259 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:57,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-19 07:49:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-19 07:49:57,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 101 states have internal predecessors, (147), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-19 07:49:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 259 transitions. [2023-11-19 07:49:57,982 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 259 transitions. Word has length 347 [2023-11-19 07:49:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:57,983 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 259 transitions. [2023-11-19 07:49:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-19 07:49:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 259 transitions. [2023-11-19 07:49:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-19 07:49:57,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:57,997 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:58,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:58,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:49:58,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:58,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1302674916, now seen corresponding path program 1 times [2023-11-19 07:49:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:58,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760354246] [2023-11-19 07:49:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:58,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991417954] [2023-11-19 07:49:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:58,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:58,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:58,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:49:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:58,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:49:58,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2485 proven. 120 refuted. 0 times theorem prover too weak. 3555 trivial. 0 not checked. [2023-11-19 07:49:59,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 45 proven. 120 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-19 07:49:59,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:59,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760354246] [2023-11-19 07:49:59,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:59,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991417954] [2023-11-19 07:49:59,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991417954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:59,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:49:59,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-19 07:49:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411153124] [2023-11-19 07:49:59,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:59,886 INFO L87 Difference]: Start difference. First operand 159 states and 259 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-19 07:50:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:01,458 INFO L93 Difference]: Finished difference Result 665 states and 1071 transitions. [2023-11-19 07:50:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:50:01,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 348 [2023-11-19 07:50:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:01,469 INFO L225 Difference]: With dead ends: 665 [2023-11-19 07:50:01,470 INFO L226 Difference]: Without dead ends: 509 [2023-11-19 07:50:01,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 688 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:50:01,486 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 706 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:01,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1170 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:50:01,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-11-19 07:50:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 324. [2023-11-19 07:50:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 192 states have (on average 1.3333333333333333) internal successors, (256), 194 states have internal predecessors, (256), 127 states have call successors, (127), 4 states have call predecessors, (127), 4 states have return successors, (127), 125 states have call predecessors, (127), 127 states have call successors, (127) [2023-11-19 07:50:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 510 transitions. [2023-11-19 07:50:01,626 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 510 transitions. Word has length 348 [2023-11-19 07:50:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:01,628 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 510 transitions. [2023-11-19 07:50:01,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-19 07:50:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 510 transitions. [2023-11-19 07:50:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-19 07:50:01,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:01,639 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:01,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:01,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:01,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:01,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1303348638, now seen corresponding path program 1 times [2023-11-19 07:50:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876001365] [2023-11-19 07:50:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:01,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237632344] [2023-11-19 07:50:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:01,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:01,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:01,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:01,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:02,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:50:02,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2079 proven. 33 refuted. 0 times theorem prover too weak. 4048 trivial. 0 not checked. [2023-11-19 07:50:03,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 132 proven. 33 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-19 07:50:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:03,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876001365] [2023-11-19 07:50:03,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:03,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237632344] [2023-11-19 07:50:03,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237632344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:03,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:50:03,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-19 07:50:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095724626] [2023-11-19 07:50:03,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:03,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:50:03,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:50:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:03,511 INFO L87 Difference]: Start difference. First operand 324 states and 510 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-11-19 07:50:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:04,622 INFO L93 Difference]: Finished difference Result 1161 states and 1822 transitions. [2023-11-19 07:50:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:50:04,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) Word has length 348 [2023-11-19 07:50:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:04,633 INFO L225 Difference]: With dead ends: 1161 [2023-11-19 07:50:04,633 INFO L226 Difference]: Without dead ends: 865 [2023-11-19 07:50:04,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:04,636 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 312 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:04,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1166 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:50:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2023-11-19 07:50:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 500. [2023-11-19 07:50:04,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 308 states have (on average 1.3636363636363635) internal successors, (420), 310 states have internal predecessors, (420), 183 states have call successors, (183), 8 states have call predecessors, (183), 8 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-19 07:50:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 786 transitions. [2023-11-19 07:50:04,791 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 786 transitions. Word has length 348 [2023-11-19 07:50:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:04,793 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 786 transitions. [2023-11-19 07:50:04,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-11-19 07:50:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 786 transitions. [2023-11-19 07:50:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-19 07:50:04,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:04,800 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:04,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:05,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:05,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:05,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1048740424, now seen corresponding path program 1 times [2023-11-19 07:50:05,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:05,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113398323] [2023-11-19 07:50:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:05,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253295563] [2023-11-19 07:50:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:05,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:05,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:05,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:05,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:05,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:50:05,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 538 proven. 312 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2023-11-19 07:50:07,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-19 07:50:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113398323] [2023-11-19 07:50:08,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253295563] [2023-11-19 07:50:08,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253295563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:08,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:50:08,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2023-11-19 07:50:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308418665] [2023-11-19 07:50:08,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:50:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:50:08,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:08,143 INFO L87 Difference]: Start difference. First operand 500 states and 786 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 13 states have internal predecessors, (148), 5 states have call successors, (112), 4 states have call predecessors, (112), 6 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) [2023-11-19 07:50:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:11,070 INFO L93 Difference]: Finished difference Result 3176 states and 4867 transitions. [2023-11-19 07:50:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-19 07:50:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 13 states have internal predecessors, (148), 5 states have call successors, (112), 4 states have call predecessors, (112), 6 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) Word has length 349 [2023-11-19 07:50:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:11,094 INFO L225 Difference]: With dead ends: 3176 [2023-11-19 07:50:11,095 INFO L226 Difference]: Without dead ends: 2704 [2023-11-19 07:50:11,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1296, Unknown=0, NotChecked=0, Total=1806 [2023-11-19 07:50:11,100 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1432 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:11,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1467 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 07:50:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2023-11-19 07:50:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1160. [2023-11-19 07:50:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 837 states have (on average 1.3679808841099164) internal successors, (1145), 841 states have internal predecessors, (1145), 299 states have call successors, (299), 23 states have call predecessors, (299), 23 states have return successors, (299), 295 states have call predecessors, (299), 299 states have call successors, (299) [2023-11-19 07:50:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1743 transitions. [2023-11-19 07:50:11,468 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1743 transitions. Word has length 349 [2023-11-19 07:50:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:11,469 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1743 transitions. [2023-11-19 07:50:11,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 13 states have internal predecessors, (148), 5 states have call successors, (112), 4 states have call predecessors, (112), 6 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) [2023-11-19 07:50:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1743 transitions. [2023-11-19 07:50:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-11-19 07:50:11,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:11,478 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:11,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:11,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:11,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:11,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:11,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1879558959, now seen corresponding path program 1 times [2023-11-19 07:50:11,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:11,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795122565] [2023-11-19 07:50:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:11,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:11,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043904180] [2023-11-19 07:50:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:11,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:11,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:11,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:11,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:12,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:50:12,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-11-19 07:50:13,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795122565] [2023-11-19 07:50:13,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043904180] [2023-11-19 07:50:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043904180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288406066] [2023-11-19 07:50:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:13,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:13,217 INFO L87 Difference]: Start difference. First operand 1160 states and 1743 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-11-19 07:50:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:13,663 INFO L93 Difference]: Finished difference Result 2657 states and 3975 transitions. [2023-11-19 07:50:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:13,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 350 [2023-11-19 07:50:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:13,675 INFO L225 Difference]: With dead ends: 2657 [2023-11-19 07:50:13,675 INFO L226 Difference]: Without dead ends: 1533 [2023-11-19 07:50:13,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 347 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 07:50:13,680 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 182 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:13,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 738 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2023-11-19 07:50:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1120. [2023-11-19 07:50:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 814 states have (on average 1.3918918918918919) internal successors, (1133), 816 states have internal predecessors, (1133), 284 states have call successors, (284), 21 states have call predecessors, (284), 21 states have return successors, (284), 282 states have call predecessors, (284), 284 states have call successors, (284) [2023-11-19 07:50:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1701 transitions. [2023-11-19 07:50:13,909 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1701 transitions. Word has length 350 [2023-11-19 07:50:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:13,910 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1701 transitions. [2023-11-19 07:50:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-11-19 07:50:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1701 transitions. [2023-11-19 07:50:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-11-19 07:50:13,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:13,915 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:13,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:14,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:14,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:14,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash 681152362, now seen corresponding path program 1 times [2023-11-19 07:50:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:14,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899387283] [2023-11-19 07:50:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:14,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:14,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787916254] [2023-11-19 07:50:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:14,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:14,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:14,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:14,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:50:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:14,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:50:14,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2829 proven. 510 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-11-19 07:50:17,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 114 proven. 372 refuted. 0 times theorem prover too weak. 5674 trivial. 0 not checked. [2023-11-19 07:50:20,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899387283] [2023-11-19 07:50:20,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787916254] [2023-11-19 07:50:20,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787916254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:20,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:50:20,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 26 [2023-11-19 07:50:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731802385] [2023-11-19 07:50:20,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:20,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:50:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:50:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:50:20,805 INFO L87 Difference]: Start difference. First operand 1120 states and 1701 transitions. Second operand has 26 states, 25 states have (on average 6.76) internal successors, (169), 23 states have internal predecessors, (169), 9 states have call successors, (112), 6 states have call predecessors, (112), 11 states have return successors, (112), 9 states have call predecessors, (112), 9 states have call successors, (112) [2023-11-19 07:50:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:27,570 INFO L93 Difference]: Finished difference Result 2842 states and 4245 transitions. [2023-11-19 07:50:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-19 07:50:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.76) internal successors, (169), 23 states have internal predecessors, (169), 9 states have call successors, (112), 6 states have call predecessors, (112), 11 states have return successors, (112), 9 states have call predecessors, (112), 9 states have call successors, (112) Word has length 352 [2023-11-19 07:50:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:27,585 INFO L225 Difference]: With dead ends: 2842 [2023-11-19 07:50:27,585 INFO L226 Difference]: Without dead ends: 1868 [2023-11-19 07:50:27,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2715 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2011, Invalid=5299, Unknown=0, NotChecked=0, Total=7310 [2023-11-19 07:50:27,593 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1505 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2341 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 07:50:27,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2023-11-19 07:50:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1316. [2023-11-19 07:50:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 876 states have (on average 1.3230593607305936) internal successors, (1159), 880 states have internal predecessors, (1159), 396 states have call successors, (396), 43 states have call predecessors, (396), 43 states have return successors, (396), 392 states have call predecessors, (396), 396 states have call successors, (396) [2023-11-19 07:50:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1951 transitions. [2023-11-19 07:50:28,044 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1951 transitions. Word has length 352 [2023-11-19 07:50:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:28,046 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1951 transitions. [2023-11-19 07:50:28,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.76) internal successors, (169), 23 states have internal predecessors, (169), 9 states have call successors, (112), 6 states have call predecessors, (112), 11 states have return successors, (112), 9 states have call predecessors, (112), 9 states have call successors, (112) [2023-11-19 07:50:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1951 transitions. [2023-11-19 07:50:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-11-19 07:50:28,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:28,050 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:28,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:50:28,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:50:28,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:28,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1557020010, now seen corresponding path program 1 times [2023-11-19 07:50:28,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:28,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442540267] [2023-11-19 07:50:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:28,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:28,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663323914] [2023-11-19 07:50:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:28,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:28,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:28,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:28,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8de340-e183-4574-bcb8-368a72f61ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:50:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:50:28,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 538 proven. 312 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2023-11-19 07:50:30,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-19 07:50:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:33,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442540267] [2023-11-19 07:50:33,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:33,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663323914] [2023-11-19 07:50:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663323914] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:33,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:50:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-19 07:50:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249443372] [2023-11-19 07:50:33,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:50:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:50:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:50:33,440 INFO L87 Difference]: Start difference. First operand 1316 states and 1951 transitions. Second operand has 18 states, 18 states have (on average 8.666666666666666) internal successors, (156), 17 states have internal predecessors, (156), 5 states have call successors, (112), 4 states have call predecessors, (112), 6 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112)