./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-1.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_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/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_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/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_7b768b18-1c7f-4017-9756-40812dae4ef0/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 f3d43f98d4e2db5588660687641290344946e641f9add1ceab76c578184e0600 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:59,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:59,701 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:34:59,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:59,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:59,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:59,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:59,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:59,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:59,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:59,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:59,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:59,756 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:59,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:59,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:34:59,759 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:59,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:59,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:59,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:59,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:34:59,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:59,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:34:59,761 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:59,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:34:59,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:59,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:59,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:59,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:59,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:59,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:59,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:59,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:34:59,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:59,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:59,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:59,767 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:34:59,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:59,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:59,768 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:59,768 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_7b768b18-1c7f-4017-9756-40812dae4ef0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3d43f98d4e2db5588660687641290344946e641f9add1ceab76c578184e0600 [2023-11-19 07:35:00,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:00,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:00,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:00,122 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:00,122 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:00,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-1.i [2023-11-19 07:35:03,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:03,546 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:03,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-1.i [2023-11-19 07:35:03,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/data/39d48cfdb/9285ae49be524fc1b1d8eca46d3fcd62/FLAGecb44cb4e [2023-11-19 07:35:03,604 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/data/39d48cfdb/9285ae49be524fc1b1d8eca46d3fcd62 [2023-11-19 07:35:03,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:03,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:03,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:03,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:03,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:03,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:03" (1/1) ... [2023-11-19 07:35:03,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48be38f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03, skipping insertion in model container [2023-11-19 07:35:03,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:03" (1/1) ... [2023-11-19 07:35:03,694 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:03,890 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_7b768b18-1c7f-4017-9756-40812dae4ef0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-1.i[915,928] [2023-11-19 07:35:04,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:04,304 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:04,320 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_7b768b18-1c7f-4017-9756-40812dae4ef0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-1.i[915,928] [2023-11-19 07:35:04,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:04,451 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:04,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04 WrapperNode [2023-11-19 07:35:04,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:04,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:04,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:04,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:04,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,622 INFO L138 Inliner]: procedures = 26, calls = 118, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 853 [2023-11-19 07:35:04,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:04,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:04,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:04,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:04,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:04,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:04,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:04,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:04,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (1/1) ... [2023-11-19 07:35:04,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:04,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:04,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:35:04,890 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:35:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:04,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:05,097 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:05,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:06,772 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:06,801 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:06,802 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:35:06,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:06 BoogieIcfgContainer [2023-11-19 07:35:06,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:06,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:06,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:06,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:06,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:03" (1/3) ... [2023-11-19 07:35:06,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b55d9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:06, skipping insertion in model container [2023-11-19 07:35:06,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:04" (2/3) ... [2023-11-19 07:35:06,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b55d9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:06, skipping insertion in model container [2023-11-19 07:35:06,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:06" (3/3) ... [2023-11-19 07:35:06,835 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-1.i [2023-11-19 07:35:06,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:06,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:35:06,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:06,942 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;@357b7a22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:06,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:35:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 230 states have (on average 1.6521739130434783) internal successors, (380), 231 states have internal predecessors, (380), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-19 07:35:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:07,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:07,052 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:07,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:07,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1362667669, now seen corresponding path program 1 times [2023-11-19 07:35:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:07,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821401792] [2023-11-19 07:35:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:07,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724124818] [2023-11-19 07:35:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:07,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:07,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:07,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:07,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:35:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:08,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:35:08,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:08,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821401792] [2023-11-19 07:35:08,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:08,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724124818] [2023-11-19 07:35:08,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724124818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:08,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:08,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:08,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995788882] [2023-11-19 07:35:08,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:08,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:35:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:35:08,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:35:08,702 INFO L87 Difference]: Start difference. First operand has 338 states, 230 states have (on average 1.6521739130434783) internal successors, (380), 231 states have internal predecessors, (380), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:08,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:08,803 INFO L93 Difference]: Finished difference Result 667 states and 1275 transitions. [2023-11-19 07:35:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:35:08,805 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:08,829 INFO L225 Difference]: With dead ends: 667 [2023-11-19 07:35:08,829 INFO L226 Difference]: Without dead ends: 332 [2023-11-19 07:35:08,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:35:08,841 INFO L413 NwaCegarLoop]: 575 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, 575 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:08,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-19 07:35:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-11-19 07:35:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 225 states have (on average 1.6222222222222222) internal successors, (365), 225 states have internal predecessors, (365), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-19 07:35:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 575 transitions. [2023-11-19 07:35:08,954 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 575 transitions. Word has length 680 [2023-11-19 07:35:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:08,959 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 575 transitions. [2023-11-19 07:35:08,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 575 transitions. [2023-11-19 07:35:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:08,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:08,987 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:09,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:35:09,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:09,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:09,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1994861935, now seen corresponding path program 1 times [2023-11-19 07:35:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612216768] [2023-11-19 07:35:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:09,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:09,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139895378] [2023-11-19 07:35:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:09,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:09,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:09,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:09,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:35:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:10,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:35:10,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:10,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:10,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612216768] [2023-11-19 07:35:10,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139895378] [2023-11-19 07:35:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139895378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117185580] [2023-11-19 07:35:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:10,315 INFO L87 Difference]: Start difference. First operand 332 states and 575 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:10,835 INFO L93 Difference]: Finished difference Result 1207 states and 2065 transitions. [2023-11-19 07:35:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:10,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:10,854 INFO L225 Difference]: With dead ends: 1207 [2023-11-19 07:35:10,854 INFO L226 Difference]: Without dead ends: 878 [2023-11-19 07:35:10,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:10,860 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 828 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:10,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1931 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:35:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-19 07:35:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 869. [2023-11-19 07:35:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 557 states have (on average 1.5565529622980252) internal successors, (867), 560 states have internal predecessors, (867), 307 states have call successors, (307), 4 states have call predecessors, (307), 4 states have return successors, (307), 304 states have call predecessors, (307), 307 states have call successors, (307) [2023-11-19 07:35:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1481 transitions. [2023-11-19 07:35:11,087 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1481 transitions. Word has length 680 [2023-11-19 07:35:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:11,094 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1481 transitions. [2023-11-19 07:35:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1481 transitions. [2023-11-19 07:35:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:11,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:11,107 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:11,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:11,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:35:11,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:11,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash 305960655, now seen corresponding path program 1 times [2023-11-19 07:35:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747810254] [2023-11-19 07:35:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:11,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:11,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012155518] [2023-11-19 07:35:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:11,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:11,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:11,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:35:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:12,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:35:12,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:12,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:12,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747810254] [2023-11-19 07:35:12,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012155518] [2023-11-19 07:35:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012155518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:12,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32791514] [2023-11-19 07:35:12,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:12,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:12,322 INFO L87 Difference]: Start difference. First operand 869 states and 1481 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:12,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:12,515 INFO L93 Difference]: Finished difference Result 2321 states and 3956 transitions. [2023-11-19 07:35:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:12,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:12,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:12,532 INFO L225 Difference]: With dead ends: 2321 [2023-11-19 07:35:12,533 INFO L226 Difference]: Without dead ends: 1455 [2023-11-19 07:35:12,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:12,542 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 286 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:12,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1230 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:35:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2023-11-19 07:35:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1449. [2023-11-19 07:35:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 957 states have (on average 1.5715778474399165) internal successors, (1504), 964 states have internal predecessors, (1504), 483 states have call successors, (483), 8 states have call predecessors, (483), 8 states have return successors, (483), 476 states have call predecessors, (483), 483 states have call successors, (483) [2023-11-19 07:35:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2470 transitions. [2023-11-19 07:35:12,762 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2470 transitions. Word has length 680 [2023-11-19 07:35:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:12,768 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2470 transitions. [2023-11-19 07:35:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2470 transitions. [2023-11-19 07:35:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:12,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:12,782 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:12,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:13,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:13,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1539406511, now seen corresponding path program 1 times [2023-11-19 07:35:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:13,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188327189] [2023-11-19 07:35:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:13,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:13,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:13,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099542005] [2023-11-19 07:35:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:13,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:13,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:13,146 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:13,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:35:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:13,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:35:13,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:14,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188327189] [2023-11-19 07:35:14,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099542005] [2023-11-19 07:35:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099542005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:14,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977538090] [2023-11-19 07:35:14,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:14,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:14,961 INFO L87 Difference]: Start difference. First operand 1449 states and 2470 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:15,926 INFO L93 Difference]: Finished difference Result 7227 states and 12326 transitions. [2023-11-19 07:35:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:15,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:15,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:15,979 INFO L225 Difference]: With dead ends: 7227 [2023-11-19 07:35:15,979 INFO L226 Difference]: Without dead ends: 5781 [2023-11-19 07:35:15,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:15,992 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 1241 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:15,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2732 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:35:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2023-11-19 07:35:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 5771. [2023-11-19 07:35:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5771 states, 3806 states have (on average 1.5680504466631635) internal successors, (5968), 3834 states have internal predecessors, (5968), 1932 states have call successors, (1932), 32 states have call predecessors, (1932), 32 states have return successors, (1932), 1904 states have call predecessors, (1932), 1932 states have call successors, (1932) [2023-11-19 07:35:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5771 states to 5771 states and 9832 transitions. [2023-11-19 07:35:16,821 INFO L78 Accepts]: Start accepts. Automaton has 5771 states and 9832 transitions. Word has length 680 [2023-11-19 07:35:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:16,822 INFO L495 AbstractCegarLoop]: Abstraction has 5771 states and 9832 transitions. [2023-11-19 07:35:16,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5771 states and 9832 transitions. [2023-11-19 07:35:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:16,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:16,833 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:16,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:17,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:17,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:17,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 913415953, now seen corresponding path program 1 times [2023-11-19 07:35:17,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:17,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316523272] [2023-11-19 07:35:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:17,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:17,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:17,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040880019] [2023-11-19 07:35:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:17,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:17,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:17,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:17,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:35:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:17,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:35:17,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:20,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316523272] [2023-11-19 07:35:20,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040880019] [2023-11-19 07:35:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040880019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:20,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:20,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:20,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406692492] [2023-11-19 07:35:20,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:20,811 INFO L87 Difference]: Start difference. First operand 5771 states and 9832 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:21,607 INFO L93 Difference]: Finished difference Result 17307 states and 29490 transitions. [2023-11-19 07:35:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:21,707 INFO L225 Difference]: With dead ends: 17307 [2023-11-19 07:35:21,707 INFO L226 Difference]: Without dead ends: 11539 [2023-11-19 07:35:21,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:21,735 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 236 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:21,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1135 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2023-11-19 07:35:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 11521. [2023-11-19 07:35:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11521 states, 7592 states have (on average 1.564278187565859) internal successors, (11876), 7648 states have internal predecessors, (11876), 3864 states have call successors, (3864), 64 states have call predecessors, (3864), 64 states have return successors, (3864), 3808 states have call predecessors, (3864), 3864 states have call successors, (3864) [2023-11-19 07:35:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 19604 transitions. [2023-11-19 07:35:23,650 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 19604 transitions. Word has length 680 [2023-11-19 07:35:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:23,652 INFO L495 AbstractCegarLoop]: Abstraction has 11521 states and 19604 transitions. [2023-11-19 07:35:23,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 19604 transitions. [2023-11-19 07:35:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:23,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:23,673 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:23,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:23,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:23,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:23,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:23,892 INFO L85 PathProgramCache]: Analyzing trace with hash 841029395, now seen corresponding path program 1 times [2023-11-19 07:35:23,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:23,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528746679] [2023-11-19 07:35:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:24,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:24,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550495703] [2023-11-19 07:35:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:24,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:24,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:24,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:35:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:24,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:35:24,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:24,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:24,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528746679] [2023-11-19 07:35:24,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:24,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550495703] [2023-11-19 07:35:24,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550495703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:24,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:24,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236420180] [2023-11-19 07:35:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:24,790 INFO L87 Difference]: Start difference. First operand 11521 states and 19604 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:26,347 INFO L93 Difference]: Finished difference Result 32421 states and 55246 transitions. [2023-11-19 07:35:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:26,486 INFO L225 Difference]: With dead ends: 32421 [2023-11-19 07:35:26,486 INFO L226 Difference]: Without dead ends: 20903 [2023-11-19 07:35:26,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:26,642 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 313 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:26,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1126 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20903 states. [2023-11-19 07:35:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20903 to 20837. [2023-11-19 07:35:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20837 states, 14284 states have (on average 1.5807896947633715) internal successors, (22580), 14404 states have internal predecessors, (22580), 6424 states have call successors, (6424), 128 states have call predecessors, (6424), 128 states have return successors, (6424), 6304 states have call predecessors, (6424), 6424 states have call successors, (6424) [2023-11-19 07:35:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20837 states to 20837 states and 35428 transitions. [2023-11-19 07:35:29,404 INFO L78 Accepts]: Start accepts. Automaton has 20837 states and 35428 transitions. Word has length 680 [2023-11-19 07:35:29,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:29,406 INFO L495 AbstractCegarLoop]: Abstraction has 20837 states and 35428 transitions. [2023-11-19 07:35:29,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:29,407 INFO L276 IsEmpty]: Start isEmpty. Operand 20837 states and 35428 transitions. [2023-11-19 07:35:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:29,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:29,432 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:29,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:29,650 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 958819095, now seen corresponding path program 1 times [2023-11-19 07:35:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302179869] [2023-11-19 07:35:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:29,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:29,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675605891] [2023-11-19 07:35:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:29,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:29,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:35:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:30,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:35:30,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:30,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302179869] [2023-11-19 07:35:30,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:30,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675605891] [2023-11-19 07:35:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675605891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:30,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:30,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:30,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974891714] [2023-11-19 07:35:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:30,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:30,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:30,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:30,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:30,527 INFO L87 Difference]: Start difference. First operand 20837 states and 35428 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:32,514 INFO L93 Difference]: Finished difference Result 59937 states and 101926 transitions. [2023-11-19 07:35:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:32,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:32,684 INFO L225 Difference]: With dead ends: 59937 [2023-11-19 07:35:32,684 INFO L226 Difference]: Without dead ends: 39103 [2023-11-19 07:35:32,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:32,754 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 309 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:32,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1137 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39103 states. [2023-11-19 07:35:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39103 to 38973. [2023-11-19 07:35:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38973 states, 27428 states have (on average 1.5920956686597638) internal successors, (43668), 27676 states have internal predecessors, (43668), 11288 states have call successors, (11288), 256 states have call predecessors, (11288), 256 states have return successors, (11288), 11040 states have call predecessors, (11288), 11288 states have call successors, (11288) [2023-11-19 07:35:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38973 states to 38973 states and 66244 transitions. [2023-11-19 07:35:36,431 INFO L78 Accepts]: Start accepts. Automaton has 38973 states and 66244 transitions. Word has length 680 [2023-11-19 07:35:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:36,432 INFO L495 AbstractCegarLoop]: Abstraction has 38973 states and 66244 transitions. [2023-11-19 07:35:36,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 38973 states and 66244 transitions. [2023-11-19 07:35:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:36,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:36,464 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:36,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:36,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:36,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:36,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:36,681 INFO L85 PathProgramCache]: Analyzing trace with hash 114813593, now seen corresponding path program 1 times [2023-11-19 07:35:36,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:36,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843138358] [2023-11-19 07:35:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:36,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:36,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691474068] [2023-11-19 07:35:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:36,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:36,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:36,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:36,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:35:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:37,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:35:37,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-11-19 07:35:37,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:37,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:37,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843138358] [2023-11-19 07:35:37,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:35:37,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691474068] [2023-11-19 07:35:37,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691474068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:37,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:37,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:37,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803593600] [2023-11-19 07:35:37,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:37,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:37,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:37,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:37,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:37,378 INFO L87 Difference]: Start difference. First operand 38973 states and 66244 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:40,585 INFO L93 Difference]: Finished difference Result 98222 states and 167255 transitions. [2023-11-19 07:35:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2023-11-19 07:35:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:40,994 INFO L225 Difference]: With dead ends: 98222 [2023-11-19 07:35:40,994 INFO L226 Difference]: Without dead ends: 59252 [2023-11-19 07:35:41,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:41,082 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 341 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:41,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1267 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:35:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59252 states. [2023-11-19 07:35:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59252 to 59233. [2023-11-19 07:35:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59233 states, 42208 states have (on average 1.5824488248673236) internal successors, (66792), 42585 states have internal predecessors, (66792), 16622 states have call successors, (16622), 402 states have call predecessors, (16622), 402 states have return successors, (16622), 16245 states have call predecessors, (16622), 16622 states have call successors, (16622) [2023-11-19 07:35:45,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59233 states to 59233 states and 100036 transitions. [2023-11-19 07:35:45,374 INFO L78 Accepts]: Start accepts. Automaton has 59233 states and 100036 transitions. Word has length 680 [2023-11-19 07:35:45,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:45,376 INFO L495 AbstractCegarLoop]: Abstraction has 59233 states and 100036 transitions. [2023-11-19 07:35:45,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-11-19 07:35:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 59233 states and 100036 transitions. [2023-11-19 07:35:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-19 07:35:45,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:45,772 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:45,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:45,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:45,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:45,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:45,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1180237347, now seen corresponding path program 1 times [2023-11-19 07:35:45,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:45,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170396759] [2023-11-19 07:35:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:45,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:46,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:35:46,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745875928] [2023-11-19 07:35:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:46,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:46,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:46,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b768b18-1c7f-4017-9756-40812dae4ef0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:35:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:46,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:35:46,711 INFO L285 TraceCheckSpWp]: Computing forward predicates...