./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-41.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/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_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-41.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/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_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/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 7d919a58b34c88bc2ea4a7384a696f4bb2238ed57b015979ed96dec7aeca8ec2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:25,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:25,974 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:25,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:25,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:26,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:26,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:26,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:26,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:26,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:26,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:26,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:26,059 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:26,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:26,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:26,062 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:26,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:26,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:26,064 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:26,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:26,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:26,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:26,066 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:26,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:26,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:26,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:26,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:26,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:26,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:26,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:26,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:26,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:26,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:26,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:26,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:26,073 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:26,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:26,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:26,074 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:26,074 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_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d919a58b34c88bc2ea4a7384a696f4bb2238ed57b015979ed96dec7aeca8ec2 [2023-11-19 07:59:26,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:26,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:26,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:26,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:26,468 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:26,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-41.i [2023-11-19 07:59:29,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:29,842 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:29,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-41.i [2023-11-19 07:59:29,857 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/data/dbb2d1b34/47fcf1d504b44321897c526b9f227bbc/FLAG28f44a87a [2023-11-19 07:59:29,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/data/dbb2d1b34/47fcf1d504b44321897c526b9f227bbc [2023-11-19 07:59:29,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:29,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:29,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:29,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:29,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:29,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:29" (1/1) ... [2023-11-19 07:59:29,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e644d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:29, skipping insertion in model container [2023-11-19 07:59:29,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:29" (1/1) ... [2023-11-19 07:59:29,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:30,120 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_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-41.i[916,929] [2023-11-19 07:59:30,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:30,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:30,374 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_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-41.i[916,929] [2023-11-19 07:59:30,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:30,532 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:30,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30 WrapperNode [2023-11-19 07:59:30,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:30,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:30,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:30,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:30,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,650 INFO L138 Inliner]: procedures = 26, calls = 83, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 468 [2023-11-19 07:59:30,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:30,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:30,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:30,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:30,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:30,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:30,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:30,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:30,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (1/1) ... [2023-11-19 07:59:30,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:30,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:30,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:30,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:59:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:59:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:31,080 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:31,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:32,085 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:32,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:32,106 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:59:32,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:32 BoogieIcfgContainer [2023-11-19 07:59:32,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:32,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:32,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:32,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:32,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:29" (1/3) ... [2023-11-19 07:59:32,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af2dfc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:32, skipping insertion in model container [2023-11-19 07:59:32,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:30" (2/3) ... [2023-11-19 07:59:32,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af2dfc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:32, skipping insertion in model container [2023-11-19 07:59:32,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:32" (3/3) ... [2023-11-19 07:59:32,141 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-41.i [2023-11-19 07:59:32,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:32,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:59:32,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:32,238 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;@5ff07900, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:32,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:59:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 125 states have (on average 1.536) internal successors, (192), 126 states have internal predecessors, (192), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:32,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:32,283 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:32,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:32,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash -977230995, now seen corresponding path program 1 times [2023-11-19 07:59:32,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:32,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401345568] [2023-11-19 07:59:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:32,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:32,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:32,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401345568] [2023-11-19 07:59:32,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:59:32,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977860911] [2023-11-19 07:59:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:32,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:32,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:32,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:32,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:59:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:33,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:59:33,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2023-11-19 07:59:33,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:33,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977860911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:33,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142151985] [2023-11-19 07:59:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:33,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:59:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:59:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:59:33,557 INFO L87 Difference]: Start difference. First operand has 198 states, 125 states have (on average 1.536) internal successors, (192), 126 states have internal predecessors, (192), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) [2023-11-19 07:59:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:33,645 INFO L93 Difference]: Finished difference Result 389 states and 728 transitions. [2023-11-19 07:59:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:59:33,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) Word has length 441 [2023-11-19 07:59:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:33,663 INFO L225 Difference]: With dead ends: 389 [2023-11-19 07:59:33,664 INFO L226 Difference]: Without dead ends: 194 [2023-11-19 07:59:33,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 440 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 07:59:33,676 INFO L413 NwaCegarLoop]: 321 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, 321 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 07:59:33,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-19 07:59:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-19 07:59:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.4836065573770492) internal successors, (181), 122 states have internal predecessors, (181), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 321 transitions. [2023-11-19 07:59:33,810 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 321 transitions. Word has length 441 [2023-11-19 07:59:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:33,813 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 321 transitions. [2023-11-19 07:59:33,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) [2023-11-19 07:59:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 321 transitions. [2023-11-19 07:59:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:33,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:33,836 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:33,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:34,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:59:34,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:34,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:34,055 INFO L85 PathProgramCache]: Analyzing trace with hash -612815025, now seen corresponding path program 1 times [2023-11-19 07:59:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:34,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742922551] [2023-11-19 07:59:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:34,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:34,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230990822] [2023-11-19 07:59:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:34,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:34,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:34,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:34,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:59:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:34,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:59:34,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 07:59:34,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:34,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742922551] [2023-11-19 07:59:34,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:34,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230990822] [2023-11-19 07:59:34,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230990822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:34,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:34,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147739915] [2023-11-19 07:59:34,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:34,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:34,927 INFO L87 Difference]: Start difference. First operand 194 states and 321 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:35,090 INFO L93 Difference]: Finished difference Result 485 states and 806 transitions. [2023-11-19 07:59:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 07:59:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:35,106 INFO L225 Difference]: With dead ends: 485 [2023-11-19 07:59:35,106 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 07:59:35,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 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 07:59:35,112 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 155 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:35,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 645 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 07:59:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2023-11-19 07:59:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 198 states have (on average 1.52020202020202) internal successors, (301), 199 states have internal predecessors, (301), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 07:59:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 481 transitions. [2023-11-19 07:59:35,212 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 481 transitions. Word has length 441 [2023-11-19 07:59:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:35,216 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 481 transitions. [2023-11-19 07:59:35,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 481 transitions. [2023-11-19 07:59:35,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:35,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:35,234 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:35,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:35,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:35,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:35,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:35,459 INFO L85 PathProgramCache]: Analyzing trace with hash -110490033, now seen corresponding path program 1 times [2023-11-19 07:59:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809391901] [2023-11-19 07:59:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:35,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:35,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685295792] [2023-11-19 07:59:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:35,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:35,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:35,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:59:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:36,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:59:36,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 07:59:36,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:36,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:36,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809391901] [2023-11-19 07:59:36,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:36,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685295792] [2023-11-19 07:59:36,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685295792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:36,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200530686] [2023-11-19 07:59:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:36,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:36,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:36,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:36,102 INFO L87 Difference]: Start difference. First operand 291 states and 481 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:36,167 INFO L93 Difference]: Finished difference Result 587 states and 966 transitions. [2023-11-19 07:59:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:36,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 07:59:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:36,173 INFO L225 Difference]: With dead ends: 587 [2023-11-19 07:59:36,174 INFO L226 Difference]: Without dead ends: 299 [2023-11-19 07:59:36,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 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 07:59:36,177 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 145 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:36,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 706 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-19 07:59:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 240. [2023-11-19 07:59:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 167 states have (on average 1.526946107784431) internal successors, (255), 167 states have internal predecessors, (255), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 395 transitions. [2023-11-19 07:59:36,212 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 395 transitions. Word has length 441 [2023-11-19 07:59:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:36,214 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 395 transitions. [2023-11-19 07:59:36,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 395 transitions. [2023-11-19 07:59:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:36,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:36,220 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:36,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:36,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:36,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:36,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:36,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2104634739, now seen corresponding path program 1 times [2023-11-19 07:59:36,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:36,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571366869] [2023-11-19 07:59:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:36,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:36,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:36,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157394223] [2023-11-19 07:59:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:36,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:36,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:36,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:36,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:59:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:36,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:59:36,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 07:59:36,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:36,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571366869] [2023-11-19 07:59:36,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157394223] [2023-11-19 07:59:36,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157394223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:36,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:36,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:36,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255660084] [2023-11-19 07:59:36,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:36,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:36,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:36,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:36,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:36,984 INFO L87 Difference]: Start difference. First operand 240 states and 395 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:37,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:37,048 INFO L93 Difference]: Finished difference Result 713 states and 1177 transitions. [2023-11-19 07:59:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:37,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 07:59:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:37,055 INFO L225 Difference]: With dead ends: 713 [2023-11-19 07:59:37,055 INFO L226 Difference]: Without dead ends: 476 [2023-11-19 07:59:37,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 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 07:59:37,058 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 309 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:37,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 929 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:37,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-19 07:59:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 244. [2023-11-19 07:59:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 171 states have (on average 1.5204678362573099) internal successors, (260), 171 states have internal predecessors, (260), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 400 transitions. [2023-11-19 07:59:37,101 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 400 transitions. Word has length 441 [2023-11-19 07:59:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:37,103 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 400 transitions. [2023-11-19 07:59:37,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 400 transitions. [2023-11-19 07:59:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:37,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:37,108 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:37,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:37,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:37,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:37,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:37,333 INFO L85 PathProgramCache]: Analyzing trace with hash 415325195, now seen corresponding path program 1 times [2023-11-19 07:59:37,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487140841] [2023-11-19 07:59:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:37,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:37,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276058149] [2023-11-19 07:59:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:37,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:37,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:37,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:37,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:59:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:37,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:37,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 3567 proven. 48 refuted. 0 times theorem prover too weak. 6045 trivial. 0 not checked. [2023-11-19 07:59:38,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 159 proven. 48 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-19 07:59:38,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487140841] [2023-11-19 07:59:38,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:38,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276058149] [2023-11-19 07:59:38,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276058149] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:38,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:38,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:59:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24003653] [2023-11-19 07:59:38,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:38,518 INFO L87 Difference]: Start difference. First operand 244 states and 400 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-11-19 07:59:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:39,081 INFO L93 Difference]: Finished difference Result 495 states and 806 transitions. [2023-11-19 07:59:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:59:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 441 [2023-11-19 07:59:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:39,086 INFO L225 Difference]: With dead ends: 495 [2023-11-19 07:59:39,086 INFO L226 Difference]: Without dead ends: 254 [2023-11-19 07:59:39,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 874 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:39,088 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 329 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:39,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 594 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:59:39,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-19 07:59:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2023-11-19 07:59:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 174 states have (on average 1.5) internal successors, (261), 174 states have internal predecessors, (261), 70 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 401 transitions. [2023-11-19 07:59:39,125 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 401 transitions. Word has length 441 [2023-11-19 07:59:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:39,129 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 401 transitions. [2023-11-19 07:59:39,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-11-19 07:59:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 401 transitions. [2023-11-19 07:59:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:39,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:39,134 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:39,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:39,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:39,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:39,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1273618547, now seen corresponding path program 1 times [2023-11-19 07:59:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207384678] [2023-11-19 07:59:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:39,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:39,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:39,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041416826] [2023-11-19 07:59:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:39,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:39,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:39,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:59:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:39,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:39,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4899 proven. 102 refuted. 0 times theorem prover too weak. 4659 trivial. 0 not checked. [2023-11-19 07:59:40,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 105 proven. 102 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-19 07:59:40,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:40,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207384678] [2023-11-19 07:59:40,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:40,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041416826] [2023-11-19 07:59:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041416826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:40,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:40,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:59:40,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798339688] [2023-11-19 07:59:40,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:40,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:40,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:40,667 INFO L87 Difference]: Start difference. First operand 248 states and 401 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-11-19 07:59:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:41,124 INFO L93 Difference]: Finished difference Result 505 states and 810 transitions. [2023-11-19 07:59:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:59:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 441 [2023-11-19 07:59:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:41,129 INFO L225 Difference]: With dead ends: 505 [2023-11-19 07:59:41,129 INFO L226 Difference]: Without dead ends: 260 [2023-11-19 07:59:41,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 874 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:41,133 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 161 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:41,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 566 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:59:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-19 07:59:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 252. [2023-11-19 07:59:41,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 177 states have (on average 1.463276836158192) internal successors, (259), 177 states have internal predecessors, (259), 70 states have call successors, (70), 4 states have call predecessors, (70), 4 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 399 transitions. [2023-11-19 07:59:41,169 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 399 transitions. Word has length 441 [2023-11-19 07:59:41,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:41,170 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 399 transitions. [2023-11-19 07:59:41,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-11-19 07:59:41,170 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 399 transitions. [2023-11-19 07:59:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:41,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:41,175 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:41,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:41,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:41,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:41,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1433000847, now seen corresponding path program 1 times [2023-11-19 07:59:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277716959] [2023-11-19 07:59:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:41,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:41,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410228112] [2023-11-19 07:59:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:41,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:41,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:59:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:41,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:59:41,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 3910 proven. 348 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2023-11-19 07:59:43,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 07:59:45,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277716959] [2023-11-19 07:59:45,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410228112] [2023-11-19 07:59:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410228112] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:45,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:45,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-11-19 07:59:45,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422808306] [2023-11-19 07:59:45,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:45,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:59:45,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:59:45,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:59:45,737 INFO L87 Difference]: Start difference. First operand 252 states and 399 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:46,620 INFO L93 Difference]: Finished difference Result 1101 states and 1742 transitions. [2023-11-19 07:59:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 07:59:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:46,628 INFO L225 Difference]: With dead ends: 1101 [2023-11-19 07:59:46,628 INFO L226 Difference]: Without dead ends: 852 [2023-11-19 07:59:46,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:59:46,630 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 1114 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:46,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1621 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:59:46,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-11-19 07:59:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 339. [2023-11-19 07:59:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 263 states have internal predecessors, (405), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 545 transitions. [2023-11-19 07:59:46,670 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 545 transitions. Word has length 441 [2023-11-19 07:59:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:46,670 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 545 transitions. [2023-11-19 07:59:46,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 545 transitions. [2023-11-19 07:59:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:46,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:46,675 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:46,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:59:46,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:46,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash 587229565, now seen corresponding path program 1 times [2023-11-19 07:59:46,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:46,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780387317] [2023-11-19 07:59:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:46,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431482023] [2023-11-19 07:59:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:46,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:46,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:46,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:46,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:59:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:47,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:59:47,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4345 proven. 483 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2023-11-19 07:59:50,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 07:59:51,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:51,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780387317] [2023-11-19 07:59:51,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:51,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431482023] [2023-11-19 07:59:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431482023] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:51,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:51,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2023-11-19 07:59:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131930045] [2023-11-19 07:59:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:51,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:59:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:59:51,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:59:51,986 INFO L87 Difference]: Start difference. First operand 339 states and 545 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:52,990 INFO L93 Difference]: Finished difference Result 1252 states and 2028 transitions. [2023-11-19 07:59:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 07:59:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:52,999 INFO L225 Difference]: With dead ends: 1252 [2023-11-19 07:59:52,999 INFO L226 Difference]: Without dead ends: 916 [2023-11-19 07:59:53,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:59:53,002 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1614 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:53,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 1954 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:59:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-11-19 07:59:53,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 433. [2023-11-19 07:59:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 357 states have (on average 1.6134453781512605) internal successors, (576), 357 states have internal predecessors, (576), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 716 transitions. [2023-11-19 07:59:53,039 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 716 transitions. Word has length 441 [2023-11-19 07:59:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:53,040 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 716 transitions. [2023-11-19 07:59:53,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 716 transitions. [2023-11-19 07:59:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:53,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:53,045 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:53,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:53,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:59:53,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:53,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash -412366319, now seen corresponding path program 1 times [2023-11-19 07:59:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:53,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091142033] [2023-11-19 07:59:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:53,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:53,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696660532] [2023-11-19 07:59:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:53,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:53,358 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:53,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:59:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:53,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 07:59:53,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4315 proven. 630 refuted. 0 times theorem prover too weak. 4715 trivial. 0 not checked. [2023-11-19 07:59:57,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 07:59:58,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091142033] [2023-11-19 07:59:58,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696660532] [2023-11-19 07:59:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696660532] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2023-11-19 07:59:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227086274] [2023-11-19 07:59:58,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:58,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:59:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:59:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:59:58,763 INFO L87 Difference]: Start difference. First operand 433 states and 716 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:59,883 INFO L93 Difference]: Finished difference Result 1336 states and 2167 transitions. [2023-11-19 07:59:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:59,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 07:59:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:59,891 INFO L225 Difference]: With dead ends: 1336 [2023-11-19 07:59:59,891 INFO L226 Difference]: Without dead ends: 906 [2023-11-19 07:59:59,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:59:59,895 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 655 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:59,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 2102 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:59:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-19 07:59:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 446. [2023-11-19 07:59:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 370 states have (on average 1.6162162162162161) internal successors, (598), 370 states have internal predecessors, (598), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:59:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 738 transitions. [2023-11-19 07:59:59,934 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 738 transitions. Word has length 441 [2023-11-19 07:59:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:59,935 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 738 transitions. [2023-11-19 07:59:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 07:59:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 738 transitions. [2023-11-19 07:59:59,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 07:59:59,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:59,940 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:59,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:00,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:00,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:00,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1258137601, now seen corresponding path program 1 times [2023-11-19 08:00:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:00,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048707592] [2023-11-19 08:00:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:00,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:00,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423542156] [2023-11-19 08:00:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:00,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:00,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:00,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:00:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:00,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 08:00:00,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4345 proven. 483 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2023-11-19 08:00:02,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 08:00:04,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:04,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048707592] [2023-11-19 08:00:04,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:04,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423542156] [2023-11-19 08:00:04,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423542156] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:04,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:04,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2023-11-19 08:00:04,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721016515] [2023-11-19 08:00:04,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:04,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:00:04,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:00:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-11-19 08:00:04,024 INFO L87 Difference]: Start difference. First operand 446 states and 738 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 08:00:04,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:04,599 INFO L93 Difference]: Finished difference Result 1364 states and 2229 transitions. [2023-11-19 08:00:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:00:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 08:00:04,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:04,614 INFO L225 Difference]: With dead ends: 1364 [2023-11-19 08:00:04,614 INFO L226 Difference]: Without dead ends: 921 [2023-11-19 08:00:04,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2023-11-19 08:00:04,619 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1007 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:04,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1703 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:00:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-11-19 08:00:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 427. [2023-11-19 08:00:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 351 states have (on average 1.606837606837607) internal successors, (564), 351 states have internal predecessors, (564), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 08:00:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 704 transitions. [2023-11-19 08:00:04,655 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 704 transitions. Word has length 441 [2023-11-19 08:00:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,656 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 704 transitions. [2023-11-19 08:00:04,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 08:00:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 704 transitions. [2023-11-19 08:00:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 08:00:04,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,661 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:04,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:00:04,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:04,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash 61193549, now seen corresponding path program 1 times [2023-11-19 08:00:04,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971023257] [2023-11-19 08:00:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147220443] [2023-11-19 08:00:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:04,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:04,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:00:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:05,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:00:05,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-19 08:00:05,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:05,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:05,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971023257] [2023-11-19 08:00:05,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:05,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147220443] [2023-11-19 08:00:05,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147220443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:05,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:05,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:05,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532875017] [2023-11-19 08:00:05,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:05,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:05,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:05,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:05,901 INFO L87 Difference]: Start difference. First operand 427 states and 704 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 08:00:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:06,115 INFO L93 Difference]: Finished difference Result 1253 states and 2045 transitions. [2023-11-19 08:00:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:06,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 441 [2023-11-19 08:00:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:06,123 INFO L225 Difference]: With dead ends: 1253 [2023-11-19 08:00:06,123 INFO L226 Difference]: Without dead ends: 829 [2023-11-19 08:00:06,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:06,125 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 331 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:06,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1065 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-19 08:00:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 824. [2023-11-19 08:00:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 655 states have (on average 1.5648854961832062) internal successors, (1025), 656 states have internal predecessors, (1025), 156 states have call successors, (156), 12 states have call predecessors, (156), 12 states have return successors, (156), 155 states have call predecessors, (156), 156 states have call successors, (156) [2023-11-19 08:00:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1337 transitions. [2023-11-19 08:00:06,202 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1337 transitions. Word has length 441 [2023-11-19 08:00:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:06,203 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1337 transitions. [2023-11-19 08:00:06,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-19 08:00:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1337 transitions. [2023-11-19 08:00:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-19 08:00:06,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:06,209 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:06,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:00:06,422 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:06,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -784577733, now seen corresponding path program 1 times [2023-11-19 08:00:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:06,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96887099] [2023-11-19 08:00:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:06,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:06,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002176418] [2023-11-19 08:00:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:06,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:06,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:06,512 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:06,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9da3b34-083d-4c7f-bcd2-1fb632c9f5ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:00:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:07,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 08:00:07,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4630 proven. 720 refuted. 0 times theorem prover too weak. 4310 trivial. 0 not checked. [2023-11-19 08:00:12,617 INFO L327 TraceCheckSpWp]: Computing backward predicates...