./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.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_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/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_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/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_74778f90-f840-4095-ae22-cafcc231cddf/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 985b50a0b8eeadb0f849d937466c4ec1e5f58df88650cbc5b820e0f210728055 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:01,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:01,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:01,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:01,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:01,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:01,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:01,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:01,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:01,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:01,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:01,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:01,892 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:01,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:01,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:01,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:01,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:01,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:01,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:01,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:01,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:01,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:01,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:01,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:01,901 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:01,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:01,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:01,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:01,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:01,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:01,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:01,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:01,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:01,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:01,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:01,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:01,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:01,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:01,909 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:01,910 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_74778f90-f840-4095-ae22-cafcc231cddf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 985b50a0b8eeadb0f849d937466c4ec1e5f58df88650cbc5b820e0f210728055 [2023-11-19 07:37:02,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:02,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:02,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:02,267 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:02,267 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:02,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-19 07:37:05,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:05,739 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:05,740 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-19 07:37:05,751 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/data/45e23fba4/8e5efa9ec23f4b3d98aa2ee28af4cf08/FLAGbbc3d3f6c [2023-11-19 07:37:05,766 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/data/45e23fba4/8e5efa9ec23f4b3d98aa2ee28af4cf08 [2023-11-19 07:37:05,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:05,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:05,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:05,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:05,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:05,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:05" (1/1) ... [2023-11-19 07:37:05,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c629c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:05, skipping insertion in model container [2023-11-19 07:37:05,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:05" (1/1) ... [2023-11-19 07:37:05,831 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:06,065 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_74778f90-f840-4095-ae22-cafcc231cddf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i[919,932] [2023-11-19 07:37:06,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:06,200 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:06,213 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_74778f90-f840-4095-ae22-cafcc231cddf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i[919,932] [2023-11-19 07:37:06,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:06,279 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:06,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06 WrapperNode [2023-11-19 07:37:06,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:06,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:06,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:06,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:06,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,379 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2023-11-19 07:37:06,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:06,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:06,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:06,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:06,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:06,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:06,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:06,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:06,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (1/1) ... [2023-11-19 07:37:06,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:06,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:06,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:06,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:06,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:37:06,549 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:37:06,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:06,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:06,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:06,653 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:06,656 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:07,295 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:07,304 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:07,305 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:37:07,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:07 BoogieIcfgContainer [2023-11-19 07:37:07,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:07,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:07,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:07,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:07,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:05" (1/3) ... [2023-11-19 07:37:07,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf46c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:07, skipping insertion in model container [2023-11-19 07:37:07,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:06" (2/3) ... [2023-11-19 07:37:07,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf46c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:07, skipping insertion in model container [2023-11-19 07:37:07,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:07" (3/3) ... [2023-11-19 07:37:07,334 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-19 07:37:07,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:07,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:07,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:07,462 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;@5ac2c8c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:07,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:37:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 60 states have internal predecessors, (90), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:37:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 07:37:07,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:07,485 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:07,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:07,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash -429023513, now seen corresponding path program 1 times [2023-11-19 07:37:07,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:07,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670601295] [2023-11-19 07:37:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:07,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:07,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:07,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670601295] [2023-11-19 07:37:07,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:37:07,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409682896] [2023-11-19 07:37:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:07,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:07,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:07,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:07,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:37:07,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-19 07:37:08,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409682896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:08,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:08,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786217499] [2023-11-19 07:37:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:08,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:37:08,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:37:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:37:08,095 INFO L87 Difference]: Start difference. First operand has 85 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 60 states have internal predecessors, (90), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 07:37:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:08,131 INFO L93 Difference]: Finished difference Result 163 states and 289 transitions. [2023-11-19 07:37:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:37:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2023-11-19 07:37:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:08,143 INFO L225 Difference]: With dead ends: 163 [2023-11-19 07:37:08,143 INFO L226 Difference]: Without dead ends: 81 [2023-11-19 07:37:08,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 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 07:37:08,151 INFO L413 NwaCegarLoop]: 128 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, 128 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 07:37:08,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-19 07:37:08,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-19 07:37:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 56 states have internal predecessors, (82), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:37:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 128 transitions. [2023-11-19 07:37:08,200 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 128 transitions. Word has length 153 [2023-11-19 07:37:08,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:08,200 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 128 transitions. [2023-11-19 07:37:08,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 07:37:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 128 transitions. [2023-11-19 07:37:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-19 07:37:08,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:08,206 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:08,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:08,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:08,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:08,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash 636161290, now seen corresponding path program 1 times [2023-11-19 07:37:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:08,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796193967] [2023-11-19 07:37:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:08,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:08,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592724555] [2023-11-19 07:37:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:08,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:08,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:08,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:08,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:37:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:08,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:37:08,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 569 proven. 84 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-11-19 07:37:09,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796193967] [2023-11-19 07:37:10,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592724555] [2023-11-19 07:37:10,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592724555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:10,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:10,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-19 07:37:10,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384223008] [2023-11-19 07:37:10,561 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:10,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:37:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:37:10,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:37:10,568 INFO L87 Difference]: Start difference. First operand 81 states and 128 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-19 07:37:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:11,812 INFO L93 Difference]: Finished difference Result 261 states and 394 transitions. [2023-11-19 07:37:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:37:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 154 [2023-11-19 07:37:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:11,818 INFO L225 Difference]: With dead ends: 261 [2023-11-19 07:37:11,818 INFO L226 Difference]: Without dead ends: 183 [2023-11-19 07:37:11,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=348, Invalid=708, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 07:37:11,822 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 403 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:11,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 456 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:37:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-19 07:37:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 141. [2023-11-19 07:37:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 108 states have (on average 1.4814814814814814) internal successors, (160), 109 states have internal predecessors, (160), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 07:37:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 214 transitions. [2023-11-19 07:37:11,853 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 214 transitions. Word has length 154 [2023-11-19 07:37:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:11,854 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 214 transitions. [2023-11-19 07:37:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-19 07:37:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 214 transitions. [2023-11-19 07:37:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-19 07:37:11,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:11,859 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:11,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:12,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:12,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:12,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1956617027, now seen corresponding path program 1 times [2023-11-19 07:37:12,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:12,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199390691] [2023-11-19 07:37:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:12,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625955053] [2023-11-19 07:37:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:12,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:12,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:12,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74778f90-f840-4095-ae22-cafcc231cddf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:37:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:12,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-19 07:37:12,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 658 proven. 219 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-19 07:37:18,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:37:31,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:31,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199390691] [2023-11-19 07:37:31,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:31,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625955053] [2023-11-19 07:37:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625955053] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:31,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:31,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [32] total 41 [2023-11-19 07:37:31,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572552134] [2023-11-19 07:37:31,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:31,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:37:31,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:31,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:37:31,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1335, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 07:37:31,572 INFO L87 Difference]: Start difference. First operand 141 states and 214 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23)