./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 d7d4fb25fbc803f31b02941dc47e3673e8088bde62ceff791efc59ea770812ad --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:22,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:22,848 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:44:22,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:22,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:22,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:22,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:22,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:22,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:22,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:22,906 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:22,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:22,907 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:22,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:22,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:22,909 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:22,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:44:22,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:22,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:22,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:22,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:22,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:22,912 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:22,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:22,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:22,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:22,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:22,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:22,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:22,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:22,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:22,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:22,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:44:22,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:44:22,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:22,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:22,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:22,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:22,919 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:22,919 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_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7d4fb25fbc803f31b02941dc47e3673e8088bde62ceff791efc59ea770812ad [2023-11-06 22:44:23,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:23,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:23,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:23,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:23,288 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:23,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-64.i [2023-11-06 22:44:26,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:26,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:26,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-64.i [2023-11-06 22:44:26,673 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/data/0ab646416/b133b03940b84ca499a0f47f964c1293/FLAG8addf062f [2023-11-06 22:44:26,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/data/0ab646416/b133b03940b84ca499a0f47f964c1293 [2023-11-06 22:44:26,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:26,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:26,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:26,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:26,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:26,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:26" (1/1) ... [2023-11-06 22:44:26,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db85659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:26, skipping insertion in model container [2023-11-06 22:44:26,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:26" (1/1) ... [2023-11-06 22:44:26,771 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:26,969 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_bce9478f-41f2-401b-b0c8-1f3377eb85ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-64.i[919,932] [2023-11-06 22:44:27,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:27,103 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:27,113 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_bce9478f-41f2-401b-b0c8-1f3377eb85ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-64.i[919,932] [2023-11-06 22:44:27,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:27,179 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:27,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27 WrapperNode [2023-11-06 22:44:27,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:27,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:27,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:27,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:27,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,276 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2023-11-06 22:44:27,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:27,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:27,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:27,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:27,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:27,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:27,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:27,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:27,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2023-11-06 22:44:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:27,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:27,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:27,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:44:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:44:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:27,555 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:27,557 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:28,179 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:28,186 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:28,187 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:44:28,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:28 BoogieIcfgContainer [2023-11-06 22:44:28,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:28,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:28,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:28,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:28,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:26" (1/3) ... [2023-11-06 22:44:28,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:28, skipping insertion in model container [2023-11-06 22:44:28,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (2/3) ... [2023-11-06 22:44:28,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:28, skipping insertion in model container [2023-11-06 22:44:28,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:28" (3/3) ... [2023-11-06 22:44:28,198 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-64.i [2023-11-06 22:44:28,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:28,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:44:28,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:28,278 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=LoopsAndPotentialCycles, 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;@79f83589, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:28,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:44:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 62 states have (on average 1.403225806451613) internal successors, (87), 63 states have internal predecessors, (87), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-06 22:44:28,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:28,304 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:28,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:28,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash 695838256, now seen corresponding path program 1 times [2023-11-06 22:44:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712506783] [2023-11-06 22:44:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:28,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:28,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712506783] [2023-11-06 22:44:28,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:44:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171086397] [2023-11-06 22:44:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:28,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:28,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:28,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:28,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:29,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:44:29,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-11-06 22:44:29,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171086397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:29,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:29,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657292205] [2023-11-06 22:44:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:29,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:44:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:44:29,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:29,183 INFO L87 Difference]: Start difference. First operand has 103 states, 62 states have (on average 1.403225806451613) internal successors, (87), 63 states have internal predecessors, (87), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-06 22:44:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:29,260 INFO L93 Difference]: Finished difference Result 199 states and 358 transitions. [2023-11-06 22:44:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:44:29,262 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 238 [2023-11-06 22:44:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:29,273 INFO L225 Difference]: With dead ends: 199 [2023-11-06 22:44:29,273 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 22:44:29,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:29,286 INFO L413 NwaCegarLoop]: 156 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, 156 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 [2023-11-06 22:44:29,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 22:44:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-06 22:44:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 156 transitions. [2023-11-06 22:44:29,353 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 156 transitions. Word has length 238 [2023-11-06 22:44:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:29,354 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 156 transitions. [2023-11-06 22:44:29,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-06 22:44:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 156 transitions. [2023-11-06 22:44:29,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-06 22:44:29,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:29,365 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:29,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:44:29,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:44:29,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:29,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1576468524, now seen corresponding path program 1 times [2023-11-06 22:44:29,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:29,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240720230] [2023-11-06 22:44:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:29,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:29,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47720924] [2023-11-06 22:44:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:29,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:29,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:29,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:29,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:44:30,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-06 22:44:37,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:37,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:37,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240720230] [2023-11-06 22:44:37,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47720924] [2023-11-06 22:44:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47720924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:37,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:37,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197566680] [2023-11-06 22:44:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:37,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:37,731 INFO L87 Difference]: Start difference. First operand 99 states and 156 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:38,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:38,415 INFO L93 Difference]: Finished difference Result 366 states and 575 transitions. [2023-11-06 22:44:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:44:38,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2023-11-06 22:44:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:38,423 INFO L225 Difference]: With dead ends: 366 [2023-11-06 22:44:38,423 INFO L226 Difference]: Without dead ends: 270 [2023-11-06 22:44:38,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:38,426 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 264 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:38,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1025 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:44:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-06 22:44:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 110. [2023-11-06 22:44:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 70 states have internal predecessors, (96), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 172 transitions. [2023-11-06 22:44:38,461 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 172 transitions. Word has length 238 [2023-11-06 22:44:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:38,464 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 172 transitions. [2023-11-06 22:44:38,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 172 transitions. [2023-11-06 22:44:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-06 22:44:38,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:38,470 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:38,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:38,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:38,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:38,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2017434194, now seen corresponding path program 1 times [2023-11-06 22:44:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051295549] [2023-11-06 22:44:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:38,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582948670] [2023-11-06 22:44:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:38,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:38,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:38,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:44:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:44:38,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-06 22:44:40,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:40,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051295549] [2023-11-06 22:44:40,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582948670] [2023-11-06 22:44:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582948670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:40,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118360620] [2023-11-06 22:44:40,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:40,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:40,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:40,781 INFO L87 Difference]: Start difference. First operand 110 states and 172 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:41,070 INFO L93 Difference]: Finished difference Result 314 states and 489 transitions. [2023-11-06 22:44:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:44:41,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2023-11-06 22:44:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:41,075 INFO L225 Difference]: With dead ends: 314 [2023-11-06 22:44:41,075 INFO L226 Difference]: Without dead ends: 207 [2023-11-06 22:44:41,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:41,077 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 160 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:41,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 773 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:44:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-06 22:44:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 110. [2023-11-06 22:44:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 70 states have internal predecessors, (96), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 172 transitions. [2023-11-06 22:44:41,099 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 172 transitions. Word has length 238 [2023-11-06 22:44:41,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:41,100 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 172 transitions. [2023-11-06 22:44:41,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 172 transitions. [2023-11-06 22:44:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-06 22:44:41,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:41,105 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:41,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:41,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:41,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1118421292, now seen corresponding path program 1 times [2023-11-06 22:44:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132821472] [2023-11-06 22:44:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665862277] [2023-11-06 22:44:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:41,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:41,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:41,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:44:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:41,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-06 22:44:41,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:41,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132821472] [2023-11-06 22:44:41,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:41,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665862277] [2023-11-06 22:44:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665862277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:41,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265370773] [2023-11-06 22:44:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:41,610 INFO L87 Difference]: Start difference. First operand 110 states and 172 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:41,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:41,658 INFO L93 Difference]: Finished difference Result 322 states and 506 transitions. [2023-11-06 22:44:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:41,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2023-11-06 22:44:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:41,662 INFO L225 Difference]: With dead ends: 322 [2023-11-06 22:44:41,662 INFO L226 Difference]: Without dead ends: 215 [2023-11-06 22:44:41,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:41,664 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 137 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:41,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 388 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-06 22:44:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 124. [2023-11-06 22:44:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 197 transitions. [2023-11-06 22:44:41,686 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 197 transitions. Word has length 238 [2023-11-06 22:44:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:41,688 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 197 transitions. [2023-11-06 22:44:41,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 197 transitions. [2023-11-06 22:44:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-06 22:44:41,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:41,696 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:41,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:41,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:41,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1819485870, now seen corresponding path program 1 times [2023-11-06 22:44:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437371187] [2023-11-06 22:44:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:41,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797763855] [2023-11-06 22:44:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:41,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:41,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:41,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:44:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:42,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-06 22:44:43,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437371187] [2023-11-06 22:44:43,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:43,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797763855] [2023-11-06 22:44:43,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797763855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:43,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:43,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406138729] [2023-11-06 22:44:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:43,377 INFO L87 Difference]: Start difference. First operand 124 states and 197 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:43,726 INFO L93 Difference]: Finished difference Result 412 states and 652 transitions. [2023-11-06 22:44:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:44:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2023-11-06 22:44:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:43,731 INFO L225 Difference]: With dead ends: 412 [2023-11-06 22:44:43,731 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 22:44:43,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:43,734 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 265 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:43,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 690 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:44:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 22:44:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 124. [2023-11-06 22:44:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 197 transitions. [2023-11-06 22:44:43,760 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 197 transitions. Word has length 238 [2023-11-06 22:44:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:43,761 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 197 transitions. [2023-11-06 22:44:43,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 197 transitions. [2023-11-06 22:44:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-06 22:44:43,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:43,766 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:43,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:44:43,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:43,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:43,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1337276010, now seen corresponding path program 1 times [2023-11-06 22:44:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:43,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148387403] [2023-11-06 22:44:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:44,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:44,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466237502] [2023-11-06 22:44:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:44,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:44,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:44,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:44:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:44,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-06 22:44:46,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148387403] [2023-11-06 22:44:46,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:46,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466237502] [2023-11-06 22:44:46,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466237502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:46,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:46,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:46,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947467396] [2023-11-06 22:44:46,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:46,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:46,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:46,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:46,391 INFO L87 Difference]: Start difference. First operand 124 states and 197 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:46,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:46,759 INFO L93 Difference]: Finished difference Result 412 states and 651 transitions. [2023-11-06 22:44:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:44:46,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2023-11-06 22:44:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:46,763 INFO L225 Difference]: With dead ends: 412 [2023-11-06 22:44:46,763 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 22:44:46,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:46,765 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 255 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:46,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 731 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:44:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 22:44:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 117. [2023-11-06 22:44:46,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 186 transitions. [2023-11-06 22:44:46,796 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 186 transitions. Word has length 238 [2023-11-06 22:44:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:46,798 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 186 transitions. [2023-11-06 22:44:46,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-06 22:44:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 186 transitions. [2023-11-06 22:44:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-06 22:44:46,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:46,806 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:46,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:47,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:47,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:47,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash -769523993, now seen corresponding path program 1 times [2023-11-06 22:44:47,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:47,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902803711] [2023-11-06 22:44:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:47,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:47,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:47,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798862361] [2023-11-06 22:44:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:47,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:47,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:47,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce9478f-41f2-401b-b0c8-1f3377eb85ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:44:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:44:47,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:15,467 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~var_1_18~0 4294967296))) (and (<= c_~var_1_11~0 2147483647) (<= (+ c_~var_1_27~0 c_~var_1_22~0 1) (+ c_~var_1_26~0 c_~var_1_19~0)) (let ((.cse0 (mod (+ (* c_~var_1_21~0 65535) c_~var_1_20~0 (* c_~var_1_22~0 65535)) 65536))) (or (and (= .cse0 (+ 65536 c_~var_1_19~0)) (<= 32768 .cse0)) (and (= .cse0 c_~var_1_19~0) (<= .cse0 32767)))) (<= (+ (* 64 (mod c_~var_1_18~0 67108864)) 1) .cse1) (let ((.cse10 (+ c_~var_1_25~0 256)) (.cse12 (<= (+ c_~var_1_17~0 1) c_~var_1_16~0)) (.cse11 (mod c_~var_1_16~0 256))) (let ((.cse7 (<= 128 .cse11)) (.cse6 (and (= .cse10 .cse11) .cse12)) (.cse5 (<= .cse11 127)) (.cse3 (and (= c_~var_1_25~0 .cse11) .cse12)) (.cse2 (mod c_~var_1_17~0 256)) (.cse8 (<= c_~var_1_16~0 c_~var_1_17~0))) (or (and (<= .cse2 127) (let ((.cse4 (and .cse8 (= c_~var_1_25~0 .cse2)))) (or (and (or .cse3 .cse4) .cse5) (and (or .cse6 .cse4) .cse7)))) (and (<= 128 .cse2) (let ((.cse9 (and (= .cse10 .cse2) .cse8))) (or (and .cse7 (or .cse6 .cse9)) (and .cse5 (or .cse3 .cse9)))))))) (<= (+ c_~var_1_25~0 c_~var_1_12~0 1) (+ c_~var_1_13~0 c_~var_1_11~0)) (<= .cse1 (mod (* c_~var_1_1~0 c_~var_1_1~0) 4294967296)) (let ((.cse14 (+ 256 c_~var_1_10~0))) (or (and (let ((.cse13 (mod (+ c_~var_1_16~0 c_~var_1_14~0) 256))) (or (and (<= .cse13 127) (= .cse13 c_~var_1_10~0)) (and (= .cse13 .cse14) (<= 128 .cse13)))) (<= c_~var_1_16~0 c_~var_1_15~0)) (and (let ((.cse15 (mod (+ c_~var_1_14~0 c_~var_1_15~0) 256))) (or (and (<= 128 .cse15) (= .cse14 .cse15)) (and (= c_~var_1_10~0 .cse15) (<= .cse15 127)))) (<= (+ c_~var_1_15~0 1) c_~var_1_16~0)))) (or (and (= c_~var_1_12~0 c_~var_1_18~0) (<= c_~var_1_12~0 c_~var_1_13~0)) (and (= c_~var_1_13~0 c_~var_1_18~0) (<= (+ c_~var_1_13~0 1) c_~var_1_12~0))))) is different from false