./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/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_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/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_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/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 1035d962e39280c92969b9f7066ecadbc22a9f715d97d0ee182811f942c88e9b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:29,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:29,235 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:06:29,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:29,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:29,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:29,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:29,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:29,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:29,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:29,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:29,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:29,292 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:29,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:29,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:29,295 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:29,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:29,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:29,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:29,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:29,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:29,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:29,301 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:29,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:29,304 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:29,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:29,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:29,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:29,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:29,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:29,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:29,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:29,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:29,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:29,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:29,310 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:29,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:29,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:29,310 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:29,311 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_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1035d962e39280c92969b9f7066ecadbc22a9f715d97d0ee182811f942c88e9b [2023-11-19 08:06:29,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:29,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:29,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:29,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:29,651 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:29,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i [2023-11-19 08:06:32,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:32,987 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:32,988 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i [2023-11-19 08:06:32,998 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/data/8023b1a45/5e814961313b45c384cf1d5d2a177413/FLAG215aec5b0 [2023-11-19 08:06:33,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/data/8023b1a45/5e814961313b45c384cf1d5d2a177413 [2023-11-19 08:06:33,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:33,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:33,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:33,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:33,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:33,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e188327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33, skipping insertion in model container [2023-11-19 08:06:33,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:33,232 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_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i[919,932] [2023-11-19 08:06:33,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:33,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:33,369 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_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i[919,932] [2023-11-19 08:06:33,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:33,445 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:33,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33 WrapperNode [2023-11-19 08:06:33,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:33,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:33,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:33,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:33,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,535 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2023-11-19 08:06:33,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:33,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:33,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:33,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:33,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,577 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:33,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:33,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:33,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:33,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (1/1) ... [2023-11-19 08:06:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:33,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:33,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:33,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:06:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:06:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:33,808 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:33,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:34,240 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:34,250 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:34,250 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:06:34,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:34 BoogieIcfgContainer [2023-11-19 08:06:34,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:34,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:34,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:34,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:34,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:33" (1/3) ... [2023-11-19 08:06:34,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8de061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:34, skipping insertion in model container [2023-11-19 08:06:34,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:33" (2/3) ... [2023-11-19 08:06:34,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8de061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:34, skipping insertion in model container [2023-11-19 08:06:34,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:34" (3/3) ... [2023-11-19 08:06:34,264 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-81.i [2023-11-19 08:06:34,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:34,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:06:34,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:34,345 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;@261299c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:34,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:06:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 45 states have (on average 1.4) internal successors, (63), 46 states have internal predecessors, (63), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 08:06:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-19 08:06:34,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:34,374 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:34,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:34,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash 683668979, now seen corresponding path program 1 times [2023-11-19 08:06:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:34,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639740835] [2023-11-19 08:06:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639740835] [2023-11-19 08:06:34,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114236086] [2023-11-19 08:06:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:34,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:34,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:34,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:06:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:34,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:06:34,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-19 08:06:35,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:35,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114236086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:35,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447754416] [2023-11-19 08:06:35,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:35,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:35,061 INFO L87 Difference]: Start difference. First operand has 74 states, 45 states have (on average 1.4) internal successors, (63), 46 states have internal predecessors, (63), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 08:06:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:35,098 INFO L93 Difference]: Finished difference Result 141 states and 250 transitions. [2023-11-19 08:06:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 162 [2023-11-19 08:06:35,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:35,110 INFO L225 Difference]: With dead ends: 141 [2023-11-19 08:06:35,110 INFO L226 Difference]: Without dead ends: 70 [2023-11-19 08:06:35,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:35,118 INFO L413 NwaCegarLoop]: 108 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, 108 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:35,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-19 08:06:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-19 08:06:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 08:06:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 108 transitions. [2023-11-19 08:06:35,175 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 108 transitions. Word has length 162 [2023-11-19 08:06:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:35,176 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 108 transitions. [2023-11-19 08:06:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 08:06:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 108 transitions. [2023-11-19 08:06:35,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-19 08:06:35,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:35,182 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:35,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:35,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:06:35,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:35,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:35,405 INFO L85 PathProgramCache]: Analyzing trace with hash -676512589, now seen corresponding path program 1 times [2023-11-19 08:06:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:35,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711429529] [2023-11-19 08:06:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:35,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:35,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:35,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461150641] [2023-11-19 08:06:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:35,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:35,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:35,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:35,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:06:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:35,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 08:06:35,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 610 proven. 117 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-11-19 08:06:36,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2023-11-19 08:06:36,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711429529] [2023-11-19 08:06:36,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461150641] [2023-11-19 08:06:36,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461150641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:36,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:36,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-19 08:06:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526613530] [2023-11-19 08:06:36,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:36,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:06:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:06:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:06:36,994 INFO L87 Difference]: Start difference. First operand 70 states and 108 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 08:06:37,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:37,973 INFO L93 Difference]: Finished difference Result 233 states and 338 transitions. [2023-11-19 08:06:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 08:06:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) Word has length 162 [2023-11-19 08:06:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:37,980 INFO L225 Difference]: With dead ends: 233 [2023-11-19 08:06:37,980 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 08:06:37,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 08:06:37,983 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 361 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:37,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 276 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:06:37,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 08:06:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 118. [2023-11-19 08:06:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 76 states have (on average 1.263157894736842) internal successors, (96), 77 states have internal predecessors, (96), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 08:06:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 168 transitions. [2023-11-19 08:06:38,018 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 168 transitions. Word has length 162 [2023-11-19 08:06:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:38,019 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 168 transitions. [2023-11-19 08:06:38,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 08:06:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 168 transitions. [2023-11-19 08:06:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-19 08:06:38,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:38,023 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:38,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:38,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:38,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:38,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1379472986, now seen corresponding path program 1 times [2023-11-19 08:06:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763862730] [2023-11-19 08:06:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:38,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:38,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082202189] [2023-11-19 08:06:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:38,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:38,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:38,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:38,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:06:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:38,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:06:38,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2023-11-19 08:06:38,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 08:06:38,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:38,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763862730] [2023-11-19 08:06:38,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:38,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082202189] [2023-11-19 08:06:38,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082202189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:38,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:38,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-19 08:06:38,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732121662] [2023-11-19 08:06:38,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:38,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:06:38,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:06:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:06:38,921 INFO L87 Difference]: Start difference. First operand 118 states and 168 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-19 08:06:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:39,553 INFO L93 Difference]: Finished difference Result 320 states and 449 transitions. [2023-11-19 08:06:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:06:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 163 [2023-11-19 08:06:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:39,564 INFO L225 Difference]: With dead ends: 320 [2023-11-19 08:06:39,564 INFO L226 Difference]: Without dead ends: 205 [2023-11-19 08:06:39,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:06:39,567 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 182 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:39,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 417 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-19 08:06:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 160. [2023-11-19 08:06:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 103 states have internal predecessors, (119), 47 states have call successors, (47), 11 states have call predecessors, (47), 11 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 08:06:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 213 transitions. [2023-11-19 08:06:39,628 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 213 transitions. Word has length 163 [2023-11-19 08:06:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:39,629 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 213 transitions. [2023-11-19 08:06:39,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-19 08:06:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 213 transitions. [2023-11-19 08:06:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-19 08:06:39,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:39,634 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:39,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:39,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:39,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:39,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1408018706, now seen corresponding path program 1 times [2023-11-19 08:06:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:39,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677595537] [2023-11-19 08:06:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:39,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:39,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092871975] [2023-11-19 08:06:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:39,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:39,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:39,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:39,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:06:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:40,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 08:06:40,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-19 08:06:40,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 08:06:41,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677595537] [2023-11-19 08:06:41,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092871975] [2023-11-19 08:06:41,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092871975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:41,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:41,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-19 08:06:41,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440989178] [2023-11-19 08:06:41,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:41,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:06:41,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:06:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:06:41,340 INFO L87 Difference]: Start difference. First operand 160 states and 213 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-19 08:06:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:43,243 INFO L93 Difference]: Finished difference Result 429 states and 582 transitions. [2023-11-19 08:06:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-19 08:06:43,244 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 164 [2023-11-19 08:06:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:43,248 INFO L225 Difference]: With dead ends: 429 [2023-11-19 08:06:43,248 INFO L226 Difference]: Without dead ends: 306 [2023-11-19 08:06:43,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=432, Invalid=1128, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 08:06:43,250 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 571 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:43,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 474 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:06:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-19 08:06:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 241. [2023-11-19 08:06:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 151 states have (on average 1.1589403973509933) internal successors, (175), 153 states have internal predecessors, (175), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-19 08:06:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 321 transitions. [2023-11-19 08:06:43,335 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 321 transitions. Word has length 164 [2023-11-19 08:06:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:43,336 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 321 transitions. [2023-11-19 08:06:43,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-19 08:06:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 321 transitions. [2023-11-19 08:06:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-19 08:06:43,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:43,340 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:43,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:43,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:43,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:43,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash 128155028, now seen corresponding path program 1 times [2023-11-19 08:06:43,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:43,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394540884] [2023-11-19 08:06:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:43,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:43,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000309910] [2023-11-19 08:06:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:43,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:43,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:43,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:43,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:06:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:43,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-19 08:06:43,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 742 proven. 306 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-19 08:06:55,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:07:03,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394540884] [2023-11-19 08:07:03,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000309910] [2023-11-19 08:07:03,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000309910] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:03,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:03,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [34] total 41 [2023-11-19 08:07:03,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46275484] [2023-11-19 08:07:03,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:03,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:07:03,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:03,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:07:03,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 08:07:03,391 INFO L87 Difference]: Start difference. First operand 241 states and 321 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:07:04,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:04,606 INFO L93 Difference]: Finished difference Result 512 states and 671 transitions. [2023-11-19 08:07:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:07:04,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2023-11-19 08:07:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:04,611 INFO L225 Difference]: With dead ends: 512 [2023-11-19 08:07:04,611 INFO L226 Difference]: Without dead ends: 351 [2023-11-19 08:07:04,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=380, Invalid=1600, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 08:07:04,614 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 117 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:04,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 453 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:07:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-19 08:07:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 263. [2023-11-19 08:07:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 173 states have (on average 1.1849710982658959) internal successors, (205), 175 states have internal predecessors, (205), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-19 08:07:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 351 transitions. [2023-11-19 08:07:04,692 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 351 transitions. Word has length 164 [2023-11-19 08:07:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:04,693 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 351 transitions. [2023-11-19 08:07:04,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 08:07:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 351 transitions. [2023-11-19 08:07:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-19 08:07:04,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:04,696 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:04,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:04,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:04,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:04,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:04,903 INFO L85 PathProgramCache]: Analyzing trace with hash -458650986, now seen corresponding path program 1 times [2023-11-19 08:07:04,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:04,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540126639] [2023-11-19 08:07:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:04,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:04,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:04,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543458568] [2023-11-19 08:07:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:04,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:04,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:04,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:04,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10fa1e2f-1f58-4310-ac93-c2ce59fe9fc9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:07:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:05,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-19 08:07:05,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 718 proven. 336 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-19 08:07:15,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 08:07:23,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:23,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540126639] [2023-11-19 08:07:23,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:23,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543458568] [2023-11-19 08:07:23,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543458568] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:23,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [40] total 47 [2023-11-19 08:07:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790218831] [2023-11-19 08:07:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:23,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:07:23,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:07:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1699, Unknown=0, NotChecked=0, Total=2162 [2023-11-19 08:07:23,095 INFO L87 Difference]: Start difference. First operand 263 states and 351 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)