./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.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_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/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_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/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_cbe03c92-004a-4e97-97c0-769ee1996bbe/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 0bef9603856cb87254a0fac59ed35f7753088518d4df6d817dae75a7c6158cf8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:28,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:28,366 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:01:28,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:28,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:28,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:28,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:28,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:28,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:28,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:28,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:28,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:28,401 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:28,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:28,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:28,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:28,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:28,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:28,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:28,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:28,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:28,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:28,406 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:28,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:28,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:28,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:28,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:28,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:28,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:28,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:28,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:28,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:28,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:28,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:28,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:28,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:28,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:28,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:28,412 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:28,412 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_cbe03c92-004a-4e97-97c0-769ee1996bbe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bef9603856cb87254a0fac59ed35f7753088518d4df6d817dae75a7c6158cf8 [2023-11-19 08:01:28,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:28,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:28,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:28,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:28,762 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:28,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i [2023-11-19 08:01:31,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:32,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:32,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i [2023-11-19 08:01:32,137 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/data/0c4f3e2db/336c707d160547f5acf8399b296d2fd7/FLAG991a2a4f8 [2023-11-19 08:01:32,153 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/data/0c4f3e2db/336c707d160547f5acf8399b296d2fd7 [2023-11-19 08:01:32,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:32,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:32,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:32,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:32,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:32,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30baf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32, skipping insertion in model container [2023-11-19 08:01:32,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,218 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:32,438 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_cbe03c92-004a-4e97-97c0-769ee1996bbe/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i[916,929] [2023-11-19 08:01:32,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:32,585 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:32,600 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_cbe03c92-004a-4e97-97c0-769ee1996bbe/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i[916,929] [2023-11-19 08:01:32,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:32,715 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:32,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32 WrapperNode [2023-11-19 08:01:32,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:32,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:32,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:32,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:32,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,822 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-11-19 08:01:32,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:32,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:32,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:32,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:32,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:32,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:32,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:32,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:32,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (1/1) ... [2023-11-19 08:01:32,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:32,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:33,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:33,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:01:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:01:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:33,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:33,237 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:33,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:33,971 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:33,988 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:33,988 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:01:33,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:33 BoogieIcfgContainer [2023-11-19 08:01:33,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:34,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:34,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:34,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:34,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:32" (1/3) ... [2023-11-19 08:01:34,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2b11a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:34, skipping insertion in model container [2023-11-19 08:01:34,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:32" (2/3) ... [2023-11-19 08:01:34,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2b11a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:34, skipping insertion in model container [2023-11-19 08:01:34,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:33" (3/3) ... [2023-11-19 08:01:34,010 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-61.i [2023-11-19 08:01:34,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:34,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:01:34,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:34,124 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;@730900a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:34,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:01:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 73 states have (on average 1.5068493150684932) internal successors, (110), 74 states have internal predecessors, (110), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 08:01:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 08:01:34,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:34,161 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:34,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash -362886801, now seen corresponding path program 1 times [2023-11-19 08:01:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791772449] [2023-11-19 08:01:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:34,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:34,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791772449] [2023-11-19 08:01:34,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:01:34,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731227615] [2023-11-19 08:01:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:34,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:34,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:34,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:01:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:34,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:01:34,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-19 08:01:34,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731227615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:34,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:34,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904390155] [2023-11-19 08:01:34,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:34,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:01:34,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:01:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:01:35,019 INFO L87 Difference]: Start difference. First operand has 102 states, 73 states have (on average 1.5068493150684932) internal successors, (110), 74 states have internal predecessors, (110), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 08:01:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:35,060 INFO L93 Difference]: Finished difference Result 197 states and 344 transitions. [2023-11-19 08:01:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:01:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2023-11-19 08:01:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:35,073 INFO L225 Difference]: With dead ends: 197 [2023-11-19 08:01:35,073 INFO L226 Difference]: Without dead ends: 98 [2023-11-19 08:01:35,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 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 08:01:35,081 INFO L413 NwaCegarLoop]: 155 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, 155 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 08:01:35,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-19 08:01:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-19 08:01:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 70 states have internal predecessors, (103), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 08:01:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 155 transitions. [2023-11-19 08:01:35,143 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 155 transitions. Word has length 175 [2023-11-19 08:01:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:35,144 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 155 transitions. [2023-11-19 08:01:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 08:01:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 155 transitions. [2023-11-19 08:01:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 08:01:35,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:35,151 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:35,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:01:35,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:35,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1184066599, now seen corresponding path program 1 times [2023-11-19 08:01:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678204157] [2023-11-19 08:01:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:35,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:35,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614686773] [2023-11-19 08:01:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:35,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:35,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:35,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:35,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:01:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:35,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:01:35,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-19 08:01:36,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 08:01:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:37,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678204157] [2023-11-19 08:01:37,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:37,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614686773] [2023-11-19 08:01:37,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614686773] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:37,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:01:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-19 08:01:37,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036686480] [2023-11-19 08:01:37,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:37,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:01:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:01:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:01:37,307 INFO L87 Difference]: Start difference. First operand 98 states and 155 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-19 08:01:38,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:38,802 INFO L93 Difference]: Finished difference Result 507 states and 794 transitions. [2023-11-19 08:01:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 08:01:38,803 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 175 [2023-11-19 08:01:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:38,810 INFO L225 Difference]: With dead ends: 507 [2023-11-19 08:01:38,811 INFO L226 Difference]: Without dead ends: 412 [2023-11-19 08:01:38,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2023-11-19 08:01:38,815 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 815 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:38,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 880 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 08:01:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-19 08:01:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 321. [2023-11-19 08:01:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 237 states have (on average 1.5021097046413503) internal successors, (356), 237 states have internal predecessors, (356), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-19 08:01:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 512 transitions. [2023-11-19 08:01:38,954 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 512 transitions. Word has length 175 [2023-11-19 08:01:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:38,959 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 512 transitions. [2023-11-19 08:01:38,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-19 08:01:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 512 transitions. [2023-11-19 08:01:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 08:01:38,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:38,970 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:38,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:39,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:39,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:39,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash -621371735, now seen corresponding path program 1 times [2023-11-19 08:01:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:39,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675575439] [2023-11-19 08:01:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:39,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:39,254 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:39,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703814783] [2023-11-19 08:01:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:39,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:39,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:01:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:39,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:01:39,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 435 proven. 60 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-11-19 08:01:39,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 08:01:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675575439] [2023-11-19 08:01:39,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703814783] [2023-11-19 08:01:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703814783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:39,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:01:39,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-19 08:01:39,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967677282] [2023-11-19 08:01:39,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:01:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:01:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:39,978 INFO L87 Difference]: Start difference. First operand 321 states and 512 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-11-19 08:01:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:40,536 INFO L93 Difference]: Finished difference Result 851 states and 1334 transitions. [2023-11-19 08:01:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:01:40,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 175 [2023-11-19 08:01:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:40,550 INFO L225 Difference]: With dead ends: 851 [2023-11-19 08:01:40,550 INFO L226 Difference]: Without dead ends: 586 [2023-11-19 08:01:40,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:01:40,556 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 331 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:40,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 480 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:01:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-19 08:01:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 353. [2023-11-19 08:01:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 266 states have (on average 1.4285714285714286) internal successors, (380), 266 states have internal predecessors, (380), 78 states have call successors, (78), 8 states have call predecessors, (78), 8 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-19 08:01:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 536 transitions. [2023-11-19 08:01:40,633 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 536 transitions. Word has length 175 [2023-11-19 08:01:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:40,635 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 536 transitions. [2023-11-19 08:01:40,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-11-19 08:01:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 536 transitions. [2023-11-19 08:01:40,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 08:01:40,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:40,642 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:40,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:40,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:40,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:40,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash 699129967, now seen corresponding path program 1 times [2023-11-19 08:01:40,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:40,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975376353] [2023-11-19 08:01:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:40,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:40,936 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:40,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155612362] [2023-11-19 08:01:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:40,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:40,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:40,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:40,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:01:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:41,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 08:01:41,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-19 08:01:42,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:01:43,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:43,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975376353] [2023-11-19 08:01:43,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155612362] [2023-11-19 08:01:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155612362] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:43,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2023-11-19 08:01:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388902266] [2023-11-19 08:01:43,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:43,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:43,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:43,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:01:43,405 INFO L87 Difference]: Start difference. First operand 353 states and 536 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:44,363 INFO L93 Difference]: Finished difference Result 787 states and 1172 transitions. [2023-11-19 08:01:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:01:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2023-11-19 08:01:44,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:44,369 INFO L225 Difference]: With dead ends: 787 [2023-11-19 08:01:44,369 INFO L226 Difference]: Without dead ends: 526 [2023-11-19 08:01:44,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:01:44,372 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 190 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:44,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 730 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:01:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-19 08:01:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 381. [2023-11-19 08:01:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 294 states have (on average 1.401360544217687) internal successors, (412), 294 states have internal predecessors, (412), 78 states have call successors, (78), 8 states have call predecessors, (78), 8 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-19 08:01:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 568 transitions. [2023-11-19 08:01:44,440 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 568 transitions. Word has length 176 [2023-11-19 08:01:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:44,441 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 568 transitions. [2023-11-19 08:01:44,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 568 transitions. [2023-11-19 08:01:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 08:01:44,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:44,444 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:44,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:44,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:44,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:44,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1139542924, now seen corresponding path program 1 times [2023-11-19 08:01:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:44,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988470281] [2023-11-19 08:01:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:44,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:44,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:44,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735772284] [2023-11-19 08:01:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:44,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:44,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:44,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:44,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:01:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:44,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 08:01:44,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 327 proven. 198 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-11-19 08:01:47,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 08:01:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988470281] [2023-11-19 08:01:48,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735772284] [2023-11-19 08:01:48,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735772284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:48,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:01:48,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21 [2023-11-19 08:01:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303544897] [2023-11-19 08:01:48,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:48,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 08:01:48,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 08:01:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:01:48,498 INFO L87 Difference]: Start difference. First operand 381 states and 568 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 20 states have internal predecessors, (101), 5 states have call successors, (51), 4 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 08:01:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:50,420 INFO L93 Difference]: Finished difference Result 725 states and 1045 transitions. [2023-11-19 08:01:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 08:01:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 20 states have internal predecessors, (101), 5 states have call successors, (51), 4 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 176 [2023-11-19 08:01:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:50,425 INFO L225 Difference]: With dead ends: 725 [2023-11-19 08:01:50,425 INFO L226 Difference]: Without dead ends: 436 [2023-11-19 08:01:50,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 08:01:50,428 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 342 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:50,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 777 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 08:01:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-19 08:01:50,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 284. [2023-11-19 08:01:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 221 states have (on average 1.339366515837104) internal successors, (296), 221 states have internal predecessors, (296), 52 states have call successors, (52), 10 states have call predecessors, (52), 10 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 08:01:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 400 transitions. [2023-11-19 08:01:50,475 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 400 transitions. Word has length 176 [2023-11-19 08:01:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:50,476 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 400 transitions. [2023-11-19 08:01:50,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 20 states have internal predecessors, (101), 5 states have call successors, (51), 4 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 08:01:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 400 transitions. [2023-11-19 08:01:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 08:01:50,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:50,480 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:50,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:50,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:50,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1044900056, now seen corresponding path program 1 times [2023-11-19 08:01:50,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:50,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923806494] [2023-11-19 08:01:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:50,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:50,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:50,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740239097] [2023-11-19 08:01:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:50,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:50,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:50,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:01:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:50,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:01:50,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:01:51,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923806494] [2023-11-19 08:01:51,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740239097] [2023-11-19 08:01:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740239097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:51,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:51,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:01:51,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358139155] [2023-11-19 08:01:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:51,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:51,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:51,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:51,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:51,073 INFO L87 Difference]: Start difference. First operand 284 states and 400 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:51,407 INFO L93 Difference]: Finished difference Result 804 states and 1098 transitions. [2023-11-19 08:01:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:01:51,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2023-11-19 08:01:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:51,413 INFO L225 Difference]: With dead ends: 804 [2023-11-19 08:01:51,413 INFO L226 Difference]: Without dead ends: 523 [2023-11-19 08:01:51,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:01:51,416 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 189 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:51,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 748 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:01:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-11-19 08:01:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 474. [2023-11-19 08:01:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 381 states have (on average 1.31496062992126) internal successors, (501), 383 states have internal predecessors, (501), 72 states have call successors, (72), 20 states have call predecessors, (72), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-19 08:01:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 645 transitions. [2023-11-19 08:01:51,479 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 645 transitions. Word has length 178 [2023-11-19 08:01:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:51,479 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 645 transitions. [2023-11-19 08:01:51,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 645 transitions. [2023-11-19 08:01:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 08:01:51,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:51,483 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:51,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:51,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:01:51,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:51,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1561123498, now seen corresponding path program 1 times [2023-11-19 08:01:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:51,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297116816] [2023-11-19 08:01:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:51,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:51,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:51,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136267597] [2023-11-19 08:01:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:51,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:51,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:51,756 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:51,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:01:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:51,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:01:51,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:01:52,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:52,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297116816] [2023-11-19 08:01:52,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:52,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136267597] [2023-11-19 08:01:52,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136267597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:52,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:52,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:52,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363492859] [2023-11-19 08:01:52,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:52,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:52,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:52,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:52,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:52,020 INFO L87 Difference]: Start difference. First operand 474 states and 645 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:52,284 INFO L93 Difference]: Finished difference Result 938 states and 1263 transitions. [2023-11-19 08:01:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2023-11-19 08:01:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:52,298 INFO L225 Difference]: With dead ends: 938 [2023-11-19 08:01:52,298 INFO L226 Difference]: Without dead ends: 467 [2023-11-19 08:01:52,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 175 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 08:01:52,301 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 158 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:52,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 351 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:01:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-19 08:01:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 378. [2023-11-19 08:01:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 299 states have (on average 1.2909698996655519) internal successors, (386), 300 states have internal predecessors, (386), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 08:01:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 510 transitions. [2023-11-19 08:01:52,368 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 510 transitions. Word has length 178 [2023-11-19 08:01:52,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:52,368 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 510 transitions. [2023-11-19 08:01:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 510 transitions. [2023-11-19 08:01:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 08:01:52,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:52,372 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:52,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:52,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:52,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:52,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash -748823505, now seen corresponding path program 1 times [2023-11-19 08:01:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:52,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543171932] [2023-11-19 08:01:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:52,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:52,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:52,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769904725] [2023-11-19 08:01:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:52,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:52,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:52,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:52,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:01:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:52,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:01:52,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 663 proven. 42 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2023-11-19 08:01:53,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:01:53,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:53,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543171932] [2023-11-19 08:01:53,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:53,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769904725] [2023-11-19 08:01:53,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769904725] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:53,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:53,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 08:01:53,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546317365] [2023-11-19 08:01:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:53,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:53,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:01:53,206 INFO L87 Difference]: Start difference. First operand 378 states and 510 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:53,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:53,501 INFO L93 Difference]: Finished difference Result 669 states and 905 transitions. [2023-11-19 08:01:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:53,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 179 [2023-11-19 08:01:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:53,504 INFO L225 Difference]: With dead ends: 669 [2023-11-19 08:01:53,504 INFO L226 Difference]: Without dead ends: 326 [2023-11-19 08:01:53,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:01:53,506 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 253 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:53,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 249 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:01:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-19 08:01:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2023-11-19 08:01:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 244 states have (on average 1.2581967213114753) internal successors, (307), 245 states have internal predecessors, (307), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 08:01:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 431 transitions. [2023-11-19 08:01:53,557 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 431 transitions. Word has length 179 [2023-11-19 08:01:53,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:53,557 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 431 transitions. [2023-11-19 08:01:53,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:01:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 431 transitions. [2023-11-19 08:01:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-19 08:01:53,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:53,561 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:53,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:53,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:53,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:53,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:53,773 INFO L85 PathProgramCache]: Analyzing trace with hash -904327376, now seen corresponding path program 1 times [2023-11-19 08:01:53,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:53,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500061148] [2023-11-19 08:01:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:53,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:53,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:53,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325146547] [2023-11-19 08:01:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:53,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:53,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:53,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:53,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe03c92-004a-4e97-97c0-769ee1996bbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:01:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:54,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-19 08:01:54,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 786 proven. 57 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-19 08:01:56,028 INFO L327 TraceCheckSpWp]: Computing backward predicates...