./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.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_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/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_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/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_8b6e3c19-936d-48c4-9127-fec4ad8780e5/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 ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:11,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:11,638 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:04:11,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:11,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:11,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:11,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:11,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:11,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:11,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:11,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:11,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:11,681 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:11,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:11,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:04:11,683 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:11,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:11,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:11,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:11,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:04:11,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:11,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:04:11,688 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:11,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:04:11,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:11,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:11,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:11,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:11,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:11,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:11,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:11,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:04:11,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:11,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:11,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:11,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:04:11,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:11,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:11,697 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:11,697 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_8b6e3c19-936d-48c4-9127-fec4ad8780e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 [2023-11-06 22:04:12,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:12,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:12,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:12,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:12,076 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:12,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-06 22:04:15,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:15,769 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:15,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-06 22:04:15,781 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/data/abe1deb4a/3ac92981daf040a590de1e7972aad144/FLAG8e8a26289 [2023-11-06 22:04:15,802 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/data/abe1deb4a/3ac92981daf040a590de1e7972aad144 [2023-11-06 22:04:15,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:15,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:15,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:15,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:15,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:15,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:15" (1/1) ... [2023-11-06 22:04:15,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d9f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:15, skipping insertion in model container [2023-11-06 22:04:15,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:15" (1/1) ... [2023-11-06 22:04:15,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:16,071 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_8b6e3c19-936d-48c4-9127-fec4ad8780e5/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2023-11-06 22:04:16,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:16,205 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:16,218 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_8b6e3c19-936d-48c4-9127-fec4ad8780e5/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2023-11-06 22:04:16,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:16,299 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:16,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16 WrapperNode [2023-11-06 22:04:16,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:16,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:16,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:16,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:16,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,420 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2023-11-06 22:04:16,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:16,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:16,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:16,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:16,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:16,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:16,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:16,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:16,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:16,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:16,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:16,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:04:16,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:04:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:16,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:16,713 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:16,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:17,400 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:17,408 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:17,408 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:04:17,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:17 BoogieIcfgContainer [2023-11-06 22:04:17,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:17,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:17,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:17,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:17,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:15" (1/3) ... [2023-11-06 22:04:17,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ba868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:17, skipping insertion in model container [2023-11-06 22:04:17,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16" (2/3) ... [2023-11-06 22:04:17,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ba868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:17, skipping insertion in model container [2023-11-06 22:04:17,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:17" (3/3) ... [2023-11-06 22:04:17,422 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-06 22:04:17,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:17,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:04:17,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:17,498 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;@6737c8e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:17,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:04:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 76 states have (on average 1.486842105263158) internal successors, (113), 77 states have internal predecessors, (113), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:04:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-06 22:04:17,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:17,526 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:17,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:17,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1911028221, now seen corresponding path program 1 times [2023-11-06 22:04:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:17,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727522467] [2023-11-06 22:04:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:17,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:17,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727522467] [2023-11-06 22:04:17,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:04:17,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267160176] [2023-11-06 22:04:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:17,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:17,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:17,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:04:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:18,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:04:18,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-06 22:04:18,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267160176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:18,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:18,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:04:18,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871931390] [2023-11-06 22:04:18,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:04:18,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:04:18,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:04:18,468 INFO L87 Difference]: Start difference. First operand has 112 states, 76 states have (on average 1.486842105263158) internal successors, (113), 77 states have internal predecessors, (113), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) 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, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:04:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:18,552 INFO L93 Difference]: Finished difference Result 217 states and 385 transitions. [2023-11-06 22:04:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:04:18,555 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, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 213 [2023-11-06 22:04:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:18,566 INFO L225 Difference]: With dead ends: 217 [2023-11-06 22:04:18,568 INFO L226 Difference]: Without dead ends: 108 [2023-11-06 22:04:18,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 212 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 22:04:18,586 INFO L413 NwaCegarLoop]: 172 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, 172 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 22:04:18,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:04:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-06 22:04:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-06 22:04:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.452054794520548) internal successors, (106), 73 states have internal predecessors, (106), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:04:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 172 transitions. [2023-11-06 22:04:18,651 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 172 transitions. Word has length 213 [2023-11-06 22:04:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:18,652 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 172 transitions. [2023-11-06 22:04:18,652 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, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:04:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 172 transitions. [2023-11-06 22:04:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-06 22:04:18,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:18,660 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:18,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:18,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:04:18,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:18,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:18,870 INFO L85 PathProgramCache]: Analyzing trace with hash -355115249, now seen corresponding path program 1 times [2023-11-06 22:04:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:18,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102303743] [2023-11-06 22:04:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:19,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938715356] [2023-11-06 22:04:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:19,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:19,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:19,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:19,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:04:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:19,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:04:19,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-06 22:04:19,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102303743] [2023-11-06 22:04:19,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:04:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938715356] [2023-11-06 22:04:19,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938715356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:19,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:19,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198897708] [2023-11-06 22:04:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:19,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:19,851 INFO L87 Difference]: Start difference. First operand 108 states and 172 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:19,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:19,973 INFO L93 Difference]: Finished difference Result 318 states and 510 transitions. [2023-11-06 22:04:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:04:19,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2023-11-06 22:04:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:19,984 INFO L225 Difference]: With dead ends: 318 [2023-11-06 22:04:19,986 INFO L226 Difference]: Without dead ends: 213 [2023-11-06 22:04:19,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:19,990 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 92 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:19,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 500 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:04:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-06 22:04:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2023-11-06 22:04:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 142 states have (on average 1.4577464788732395) internal successors, (207), 142 states have internal predecessors, (207), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-06 22:04:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 339 transitions. [2023-11-06 22:04:20,085 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 339 transitions. Word has length 213 [2023-11-06 22:04:20,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:20,088 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 339 transitions. [2023-11-06 22:04:20,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:20,089 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 339 transitions. [2023-11-06 22:04:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-06 22:04:20,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:20,101 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:20,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:20,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:20,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:20,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash -613586070, now seen corresponding path program 1 times [2023-11-06 22:04:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:20,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885854863] [2023-11-06 22:04:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:20,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:20,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:20,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772561663] [2023-11-06 22:04:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:20,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:20,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:20,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:20,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:04:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:20,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:04:20,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-06 22:04:20,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:20,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885854863] [2023-11-06 22:04:20,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:04:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772561663] [2023-11-06 22:04:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772561663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:20,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020882303] [2023-11-06 22:04:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:20,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:20,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:20,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:20,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:20,736 INFO L87 Difference]: Start difference. First operand 211 states and 339 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:20,945 INFO L93 Difference]: Finished difference Result 627 states and 1011 transitions. [2023-11-06 22:04:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:20,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2023-11-06 22:04:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:20,957 INFO L225 Difference]: With dead ends: 627 [2023-11-06 22:04:20,957 INFO L226 Difference]: Without dead ends: 419 [2023-11-06 22:04:20,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 212 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 22:04:20,960 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 161 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:20,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 426 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:04:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-06 22:04:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 237. [2023-11-06 22:04:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 168 states have (on average 1.494047619047619) internal successors, (251), 168 states have internal predecessors, (251), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-06 22:04:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 383 transitions. [2023-11-06 22:04:21,003 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 383 transitions. Word has length 214 [2023-11-06 22:04:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:21,004 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 383 transitions. [2023-11-06 22:04:21,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 383 transitions. [2023-11-06 22:04:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-06 22:04:21,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:21,008 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:21,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:21,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:21,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:21,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash -220559060, now seen corresponding path program 1 times [2023-11-06 22:04:21,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:21,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966565199] [2023-11-06 22:04:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:21,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:21,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481865124] [2023-11-06 22:04:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:21,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:21,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:21,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:04:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:21,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 22:04:21,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1555 proven. 246 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-11-06 22:04:26,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:31,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966565199] [2023-11-06 22:04:31,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:04:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481865124] [2023-11-06 22:04:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481865124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:31,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:04:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-11-06 22:04:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536580665] [2023-11-06 22:04:31,562 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:31,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:04:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:04:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=607, Unknown=3, NotChecked=0, Total=756 [2023-11-06 22:04:31,565 INFO L87 Difference]: Start difference. First operand 237 states and 383 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 7 states have call successors, (33), 7 states have call predecessors, (33), 13 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-06 22:04:37,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:04:39,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:04:41,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:04:44,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:04:46,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:04:48,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:04:48,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:48,975 INFO L93 Difference]: Finished difference Result 643 states and 989 transitions. [2023-11-06 22:04:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-06 22:04:48,976 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 7 states have call successors, (33), 7 states have call predecessors, (33), 13 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 214 [2023-11-06 22:04:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:48,981 INFO L225 Difference]: With dead ends: 643 [2023-11-06 22:04:48,981 INFO L226 Difference]: Without dead ends: 409 [2023-11-06 22:04:48,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=323, Invalid=1156, Unknown=3, NotChecked=0, Total=1482 [2023-11-06 22:04:48,984 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 640 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:48,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 679 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 849 Invalid, 6 Unknown, 0 Unchecked, 14.4s Time] [2023-11-06 22:04:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-06 22:04:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 291. [2023-11-06 22:04:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 210 states have (on average 1.3761904761904762) internal successors, (289), 210 states have internal predecessors, (289), 66 states have call successors, (66), 14 states have call predecessors, (66), 14 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-06 22:04:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 421 transitions. [2023-11-06 22:04:49,048 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 421 transitions. Word has length 214 [2023-11-06 22:04:49,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:49,049 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 421 transitions. [2023-11-06 22:04:49,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 7 states have call successors, (33), 7 states have call predecessors, (33), 13 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-06 22:04:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 421 transitions. [2023-11-06 22:04:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-06 22:04:49,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:49,054 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:49,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:49,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:49,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:49,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash -92999461, now seen corresponding path program 1 times [2023-11-06 22:04:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441520631] [2023-11-06 22:04:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:49,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021590130] [2023-11-06 22:04:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:49,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:49,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:49,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b6e3c19-936d-48c4-9127-fec4ad8780e5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:04:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:52,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-06 22:04:52,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1568 proven. 231 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-06 22:05:16,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:28,188 WARN L293 SmtUtils]: Spent 16.59s on a formula simplification. DAG size of input: 63 DAG size of output: 50 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:06:38,337 WARN L861 $PredicateComparison]: unable to prove that (or (let ((.cse6 (div (mod c_~var_1_19~0 256) (mod c_~var_1_18~0 256))) (.cse0 (mod c_~var_1_35~0 65536))) (let ((.cse1 (* .cse0 4294967295)) (.cse2 (* c_~var_1_26~0 4294967295 .cse6)) (.cse3 (let ((.cse5 (mod (* c_~var_1_26~0 .cse6) 4294967296))) (< (let ((.cse4 (mod c_~var_1_26~0 4294967296))) (+ (* 4294967295 .cse4) 4294967295 (* (div (+ (- 1) (* 4294967294 .cse5) (* (- 4294967295) .cse4)) 4294967296) 4294967296))) (* 4294967295 .cse5))))) (and (or (< 32767 .cse0) (not (= 0 (mod (+ c_~var_1_26~0 .cse1 .cse2) 4294967296))) .cse3) (or (not (= (mod (+ 65536 c_~var_1_26~0 .cse1 .cse2) 4294967296) 0)) .cse3 (< .cse0 32768))))) (< c_~var_1_30~0 (mod c_~var_1_17~0 256))) is different from true [2023-11-06 22:07:27,684 WARN L293 SmtUtils]: Spent 10.64s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)