./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-28.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_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/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_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/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_729bccef-4ffa-4bb2-be07-2e93e2a56922/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 affd9b0b1d76ed6c0076d3599bdbad65950dbdf7c49581f4e5a006dd746abe7e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:55,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:55,971 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:54:55,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:55,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:56,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:56,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:56,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:56,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:56,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:56,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:56,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:56,033 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:56,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:56,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:56,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:56,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:56,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:56,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:56,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:56,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:56,039 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:56,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:56,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:56,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:56,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:56,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:56,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:56,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:56,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:56,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:56,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:56,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:56,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:56,046 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:56,046 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:56,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:56,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:56,047 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:56,047 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_729bccef-4ffa-4bb2-be07-2e93e2a56922/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> affd9b0b1d76ed6c0076d3599bdbad65950dbdf7c49581f4e5a006dd746abe7e [2023-11-19 07:54:56,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:56,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:56,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:56,364 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:56,364 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:56,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-28.i [2023-11-19 07:54:59,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:00,079 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:00,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-28.i [2023-11-19 07:55:00,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/data/a60faf303/e15e6710e0544a1b89ed5153d308d6cf/FLAG4d65c880f [2023-11-19 07:55:00,128 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/data/a60faf303/e15e6710e0544a1b89ed5153d308d6cf [2023-11-19 07:55:00,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:00,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:00,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:00,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:00,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:00,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00, skipping insertion in model container [2023-11-19 07:55:00,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,214 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:00,406 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_729bccef-4ffa-4bb2-be07-2e93e2a56922/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-28.i[919,932] [2023-11-19 07:55:00,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:00,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:00,571 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_729bccef-4ffa-4bb2-be07-2e93e2a56922/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-28.i[919,932] [2023-11-19 07:55:00,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:00,683 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:00,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00 WrapperNode [2023-11-19 07:55:00,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:00,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:00,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:00,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:00,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,803 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 237 [2023-11-19 07:55:00,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:00,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:00,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:00,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:00,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:00,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:00,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:00,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:00,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (1/1) ... [2023-11-19 07:55:00,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:00,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:00,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:00,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:55:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:55:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:01,158 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:01,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:01,980 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:02,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:02,004 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:55:02,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:02 BoogieIcfgContainer [2023-11-19 07:55:02,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:02,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:02,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:02,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:02,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:00" (1/3) ... [2023-11-19 07:55:02,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ee608a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:02, skipping insertion in model container [2023-11-19 07:55:02,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:00" (2/3) ... [2023-11-19 07:55:02,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ee608a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:02, skipping insertion in model container [2023-11-19 07:55:02,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:02" (3/3) ... [2023-11-19 07:55:02,031 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-28.i [2023-11-19 07:55:02,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:02,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:55:02,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:02,144 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;@2df5f92e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:02,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:55:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 69 states have internal predecessors, (100), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 07:55:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:55:02,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:02,184 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:02,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:02,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1243967279, now seen corresponding path program 1 times [2023-11-19 07:55:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418643194] [2023-11-19 07:55:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:02,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418643194] [2023-11-19 07:55:02,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:55:02,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553767466] [2023-11-19 07:55:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:02,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:02,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:02,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:02,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:55:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:02,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:55:02,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-11-19 07:55:02,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:02,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553767466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:02,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:02,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:02,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129147387] [2023-11-19 07:55:02,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:02,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:55:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:55:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:55:03,015 INFO L87 Difference]: Start difference. First operand has 100 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 69 states have internal predecessors, (100), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-19 07:55:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:03,058 INFO L93 Difference]: Finished difference Result 193 states and 339 transitions. [2023-11-19 07:55:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:55:03,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 193 [2023-11-19 07:55:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:03,070 INFO L225 Difference]: With dead ends: 193 [2023-11-19 07:55:03,071 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 07:55:03,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 07:55:03,080 INFO L413 NwaCegarLoop]: 150 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, 150 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 07:55:03,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 07:55:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-19 07:55:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 07:55:03,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 150 transitions. [2023-11-19 07:55:03,166 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 150 transitions. Word has length 193 [2023-11-19 07:55:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:03,167 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 150 transitions. [2023-11-19 07:55:03,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-19 07:55:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 150 transitions. [2023-11-19 07:55:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:55:03,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:03,175 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:03,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:03,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:55:03,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:03,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash -15599465, now seen corresponding path program 1 times [2023-11-19 07:55:03,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840153274] [2023-11-19 07:55:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:03,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616217618] [2023-11-19 07:55:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:03,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:03,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:03,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:03,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:55:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:03,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:55:03,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:03,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:03,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840153274] [2023-11-19 07:55:03,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:03,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616217618] [2023-11-19 07:55:03,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616217618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:03,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:03,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:03,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176551779] [2023-11-19 07:55:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:03,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:03,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:03,922 INFO L87 Difference]: Start difference. First operand 96 states and 150 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:03,965 INFO L93 Difference]: Finished difference Result 189 states and 297 transitions. [2023-11-19 07:55:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:03,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 193 [2023-11-19 07:55:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:03,977 INFO L225 Difference]: With dead ends: 189 [2023-11-19 07:55:03,977 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 07:55:03,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 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 07:55:03,980 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:03,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 07:55:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-19 07:55:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 07:55:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 149 transitions. [2023-11-19 07:55:04,016 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 149 transitions. Word has length 193 [2023-11-19 07:55:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:04,024 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 149 transitions. [2023-11-19 07:55:04,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 149 transitions. [2023-11-19 07:55:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:55:04,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:04,029 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:04,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:04,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:04,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:04,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1821037799, now seen corresponding path program 1 times [2023-11-19 07:55:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690026257] [2023-11-19 07:55:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:04,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:04,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:04,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082658722] [2023-11-19 07:55:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:04,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:04,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:04,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:55:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:04,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:55:04,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:04,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:04,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:04,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690026257] [2023-11-19 07:55:04,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:05,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082658722] [2023-11-19 07:55:05,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082658722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:05,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:05,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:05,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294549325] [2023-11-19 07:55:05,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:05,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:05,008 INFO L87 Difference]: Start difference. First operand 96 states and 149 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:05,206 INFO L93 Difference]: Finished difference Result 292 states and 464 transitions. [2023-11-19 07:55:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 193 [2023-11-19 07:55:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:05,212 INFO L225 Difference]: With dead ends: 292 [2023-11-19 07:55:05,212 INFO L226 Difference]: Without dead ends: 199 [2023-11-19 07:55:05,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 190 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 07:55:05,215 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 97 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:05,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 399 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-19 07:55:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 167. [2023-11-19 07:55:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 106 states have internal predecessors, (144), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-19 07:55:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 260 transitions. [2023-11-19 07:55:05,259 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 260 transitions. Word has length 193 [2023-11-19 07:55:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:05,261 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 260 transitions. [2023-11-19 07:55:05,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 260 transitions. [2023-11-19 07:55:05,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:55:05,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:05,267 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:05,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:05,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:05,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:05,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2039892517, now seen corresponding path program 1 times [2023-11-19 07:55:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059910840] [2023-11-19 07:55:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:05,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:05,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685656778] [2023-11-19 07:55:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:05,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:05,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:05,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:05,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:55:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:05,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:55:05,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:05,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059910840] [2023-11-19 07:55:05,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685656778] [2023-11-19 07:55:05,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685656778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:05,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:05,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:05,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182021181] [2023-11-19 07:55:05,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:05,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:05,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:05,930 INFO L87 Difference]: Start difference. First operand 167 states and 260 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:06,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:06,135 INFO L93 Difference]: Finished difference Result 336 states and 534 transitions. [2023-11-19 07:55:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:55:06,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 193 [2023-11-19 07:55:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:06,145 INFO L225 Difference]: With dead ends: 336 [2023-11-19 07:55:06,146 INFO L226 Difference]: Without dead ends: 230 [2023-11-19 07:55:06,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:06,153 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 52 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:06,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 379 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:55:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-19 07:55:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 183. [2023-11-19 07:55:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 122 states have (on average 1.3688524590163935) internal successors, (167), 122 states have internal predecessors, (167), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-19 07:55:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 283 transitions. [2023-11-19 07:55:06,207 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 283 transitions. Word has length 193 [2023-11-19 07:55:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:06,209 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 283 transitions. [2023-11-19 07:55:06,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 283 transitions. [2023-11-19 07:55:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:55:06,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:06,214 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:06,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:06,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:06,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:06,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:06,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1899343907, now seen corresponding path program 1 times [2023-11-19 07:55:06,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:06,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533524956] [2023-11-19 07:55:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:06,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:06,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:06,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835411686] [2023-11-19 07:55:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:06,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:06,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:06,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:06,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:55:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:06,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:55:06,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:16,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:16,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:16,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533524956] [2023-11-19 07:55:16,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835411686] [2023-11-19 07:55:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835411686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:16,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:16,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:55:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903701244] [2023-11-19 07:55:16,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:16,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:55:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:55:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:55:16,867 INFO L87 Difference]: Start difference. First operand 183 states and 283 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:17,493 INFO L93 Difference]: Finished difference Result 384 states and 582 transitions. [2023-11-19 07:55:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:55:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 193 [2023-11-19 07:55:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:17,497 INFO L225 Difference]: With dead ends: 384 [2023-11-19 07:55:17,497 INFO L226 Difference]: Without dead ends: 283 [2023-11-19 07:55:17,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:17,499 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 256 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:17,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 632 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:55:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-19 07:55:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 236. [2023-11-19 07:55:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 166 states have (on average 1.3795180722891567) internal successors, (229), 167 states have internal predecessors, (229), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-19 07:55:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 361 transitions. [2023-11-19 07:55:17,529 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 361 transitions. Word has length 193 [2023-11-19 07:55:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:17,530 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 361 transitions. [2023-11-19 07:55:17,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 361 transitions. [2023-11-19 07:55:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:55:17,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:17,533 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:17,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:17,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:17,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:17,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2002596379, now seen corresponding path program 1 times [2023-11-19 07:55:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390357194] [2023-11-19 07:55:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:17,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:17,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28245776] [2023-11-19 07:55:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:17,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:17,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:17,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:55:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:17,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:55:17,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:18,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390357194] [2023-11-19 07:55:18,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28245776] [2023-11-19 07:55:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28245776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:18,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:18,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:18,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672949658] [2023-11-19 07:55:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:18,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:18,237 INFO L87 Difference]: Start difference. First operand 236 states and 361 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:18,613 INFO L93 Difference]: Finished difference Result 659 states and 1006 transitions. [2023-11-19 07:55:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:18,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 193 [2023-11-19 07:55:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:18,621 INFO L225 Difference]: With dead ends: 659 [2023-11-19 07:55:18,621 INFO L226 Difference]: Without dead ends: 505 [2023-11-19 07:55:18,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:55:18,624 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 398 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:18,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 535 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:55:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-11-19 07:55:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 429. [2023-11-19 07:55:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 297 states have (on average 1.367003367003367) internal successors, (406), 298 states have internal predecessors, (406), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 123 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-19 07:55:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 654 transitions. [2023-11-19 07:55:18,687 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 654 transitions. Word has length 193 [2023-11-19 07:55:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:18,687 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 654 transitions. [2023-11-19 07:55:18,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 654 transitions. [2023-11-19 07:55:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:55:18,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:18,692 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:18,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:18,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:18,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:18,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1193249753, now seen corresponding path program 1 times [2023-11-19 07:55:18,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:18,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820667193] [2023-11-19 07:55:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:18,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:18,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:18,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711747713] [2023-11-19 07:55:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:18,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:18,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:18,966 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:18,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:55:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:19,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:19,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:19,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820667193] [2023-11-19 07:55:19,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711747713] [2023-11-19 07:55:19,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711747713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:19,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991888155] [2023-11-19 07:55:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:19,730 INFO L87 Difference]: Start difference. First operand 429 states and 654 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:19,823 INFO L93 Difference]: Finished difference Result 806 states and 1229 transitions. [2023-11-19 07:55:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:19,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 193 [2023-11-19 07:55:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:19,833 INFO L225 Difference]: With dead ends: 806 [2023-11-19 07:55:19,833 INFO L226 Difference]: Without dead ends: 438 [2023-11-19 07:55:19,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 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 07:55:19,836 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 22 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:19,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 249 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-19 07:55:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 427. [2023-11-19 07:55:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 295 states have (on average 1.352542372881356) internal successors, (399), 296 states have internal predecessors, (399), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 123 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-19 07:55:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 647 transitions. [2023-11-19 07:55:19,892 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 647 transitions. Word has length 193 [2023-11-19 07:55:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:19,893 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 647 transitions. [2023-11-19 07:55:19,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 647 transitions. [2023-11-19 07:55:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:55:19,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:19,897 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:19,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 07:55:20,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:20,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:20,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1022016449, now seen corresponding path program 1 times [2023-11-19 07:55:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312797982] [2023-11-19 07:55:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:20,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:20,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448057595] [2023-11-19 07:55:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:20,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:20,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:20,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:20,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:55:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:20,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:55:20,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:27,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:27,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312797982] [2023-11-19 07:55:27,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448057595] [2023-11-19 07:55:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448057595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:27,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:27,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:55:27,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302055453] [2023-11-19 07:55:27,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:55:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:55:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:55:27,058 INFO L87 Difference]: Start difference. First operand 427 states and 647 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:27,702 INFO L93 Difference]: Finished difference Result 880 states and 1315 transitions. [2023-11-19 07:55:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:55:27,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 194 [2023-11-19 07:55:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:27,708 INFO L225 Difference]: With dead ends: 880 [2023-11-19 07:55:27,708 INFO L226 Difference]: Without dead ends: 524 [2023-11-19 07:55:27,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:27,711 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 188 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:27,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 772 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:55:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-19 07:55:27,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 432. [2023-11-19 07:55:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 300 states have (on average 1.35) internal successors, (405), 301 states have internal predecessors, (405), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 123 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-19 07:55:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 653 transitions. [2023-11-19 07:55:27,752 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 653 transitions. Word has length 194 [2023-11-19 07:55:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:27,753 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 653 transitions. [2023-11-19 07:55:27,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 653 transitions. [2023-11-19 07:55:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:55:27,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:27,756 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:27,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:27,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:27,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:27,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash -830760063, now seen corresponding path program 1 times [2023-11-19 07:55:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:27,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611314962] [2023-11-19 07:55:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:28,002 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:28,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204926057] [2023-11-19 07:55:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:28,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:28,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:28,004 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:28,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:55:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:28,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:55:28,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:35,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:35,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:35,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611314962] [2023-11-19 07:55:35,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:35,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204926057] [2023-11-19 07:55:35,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204926057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:35,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:35,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:55:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347347323] [2023-11-19 07:55:35,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:35,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:55:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:35,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:55:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:35,010 INFO L87 Difference]: Start difference. First operand 432 states and 653 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:35,655 INFO L93 Difference]: Finished difference Result 885 states and 1320 transitions. [2023-11-19 07:55:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:55:35,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 194 [2023-11-19 07:55:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:35,662 INFO L225 Difference]: With dead ends: 885 [2023-11-19 07:55:35,662 INFO L226 Difference]: Without dead ends: 524 [2023-11-19 07:55:35,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:55:35,665 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 173 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:35,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 886 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:55:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-19 07:55:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 446. [2023-11-19 07:55:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 314 states have (on average 1.3598726114649682) internal successors, (427), 315 states have internal predecessors, (427), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 123 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-19 07:55:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 675 transitions. [2023-11-19 07:55:35,707 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 675 transitions. Word has length 194 [2023-11-19 07:55:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:35,707 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 675 transitions. [2023-11-19 07:55:35,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 675 transitions. [2023-11-19 07:55:35,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:55:35,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:35,711 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:35,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:35,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:35,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:35,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:35,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2033133699, now seen corresponding path program 1 times [2023-11-19 07:55:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:35,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548319103] [2023-11-19 07:55:35,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:35,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:35,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819621725] [2023-11-19 07:55:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:35,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:35,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:35,961 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:35,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:55:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:36,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:55:36,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-19 07:55:42,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548319103] [2023-11-19 07:55:42,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819621725] [2023-11-19 07:55:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819621725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:42,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:55:42,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62405087] [2023-11-19 07:55:42,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:55:42,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:42,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:55:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:42,020 INFO L87 Difference]: Start difference. First operand 446 states and 675 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:42,715 INFO L93 Difference]: Finished difference Result 899 states and 1340 transitions. [2023-11-19 07:55:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:55:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 194 [2023-11-19 07:55:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:42,722 INFO L225 Difference]: With dead ends: 899 [2023-11-19 07:55:42,722 INFO L226 Difference]: Without dead ends: 524 [2023-11-19 07:55:42,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:55:42,725 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 156 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:42,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 891 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:55:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-19 07:55:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 445. [2023-11-19 07:55:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 313 states have (on average 1.351437699680511) internal successors, (423), 314 states have internal predecessors, (423), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 123 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-19 07:55:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 671 transitions. [2023-11-19 07:55:42,771 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 671 transitions. Word has length 194 [2023-11-19 07:55:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:42,773 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 671 transitions. [2023-11-19 07:55:42,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-19 07:55:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 671 transitions. [2023-11-19 07:55:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:55:42,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:42,778 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:42,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:42,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:55:42,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:42,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1201425541, now seen corresponding path program 1 times [2023-11-19 07:55:42,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:42,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074590607] [2023-11-19 07:55:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:42,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:43,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:43,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163121319] [2023-11-19 07:55:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:43,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:43,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:43,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:43,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729bccef-4ffa-4bb2-be07-2e93e2a56922/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:55:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:43,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:55:43,247 INFO L285 TraceCheckSpWp]: Computing forward predicates...