./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.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_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/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_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/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_37fb4c2c-9de5-4610-ae6a-30d8682b926e/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 e5d824b03b1062bc80d2a26259481f4ec625cce3bb4d233966c7a76128ce8234 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:53:30,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:53:30,803 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:53:30,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:53:30,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:53:30,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:53:30,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:53:30,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:53:30,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:53:30,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:53:30,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:53:30,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:53:30,868 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:53:30,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:53:30,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:53:30,871 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:53:30,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:53:30,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:53:30,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:53:30,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:53:30,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:53:30,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:53:30,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:53:30,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:53:30,875 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:53:30,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:53:30,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:53:30,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:53:30,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:30,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:53:30,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:53:30,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:53:30,880 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:53:30,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:53:30,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:53:30,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:53:30,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:53:30,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:53:30,882 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:53:30,882 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_37fb4c2c-9de5-4610-ae6a-30d8682b926e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5d824b03b1062bc80d2a26259481f4ec625cce3bb4d233966c7a76128ce8234 [2023-11-06 22:53:31,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:53:31,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:53:31,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:53:31,264 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:53:31,265 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:53:31,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-11-06 22:53:34,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:53:34,651 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:53:34,651 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-11-06 22:53:34,665 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/data/915485aa7/311b6dcf24ad491c89e5b5e8e72c0605/FLAGd7cebd7a9 [2023-11-06 22:53:34,689 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/data/915485aa7/311b6dcf24ad491c89e5b5e8e72c0605 [2023-11-06 22:53:34,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:53:34,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:53:34,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:34,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:53:34,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:53:34,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:34" (1/1) ... [2023-11-06 22:53:34,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e21aa5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:34, skipping insertion in model container [2023-11-06 22:53:34,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:34" (1/1) ... [2023-11-06 22:53:34,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:53:34,936 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_37fb4c2c-9de5-4610-ae6a-30d8682b926e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i[915,928] [2023-11-06 22:53:35,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:35,150 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:53:35,169 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_37fb4c2c-9de5-4610-ae6a-30d8682b926e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i[915,928] [2023-11-06 22:53:35,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:35,315 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:53:35,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35 WrapperNode [2023-11-06 22:53:35,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:35,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:35,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:53:35,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:53:35,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,419 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 543 [2023-11-06 22:53:35,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:35,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:53:35,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:53:35,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:53:35,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:53:35,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:53:35,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:53:35,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:53:35,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (1/1) ... [2023-11-06 22:53:35,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:35,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:35,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:53:35,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:53:35,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:53:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:53:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:53:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:53:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:53:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:53:35,759 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:53:35,761 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:53:36,635 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:53:36,655 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:53:36,662 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:53:36,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:36 BoogieIcfgContainer [2023-11-06 22:53:36,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:53:36,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:53:36,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:53:36,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:53:36,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:53:34" (1/3) ... [2023-11-06 22:53:36,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdfe529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:36, skipping insertion in model container [2023-11-06 22:53:36,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:35" (2/3) ... [2023-11-06 22:53:36,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdfe529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:36, skipping insertion in model container [2023-11-06 22:53:36,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:36" (3/3) ... [2023-11-06 22:53:36,674 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-11-06 22:53:36,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:53:36,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:53:36,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:53:36,760 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;@7340622f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:53:36,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:53:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 139 states have internal predecessors, (213), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-06 22:53:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-06 22:53:36,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:36,802 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:36,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:53:36,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1841601891, now seen corresponding path program 1 times [2023-11-06 22:53:36,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:36,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645011407] [2023-11-06 22:53:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645011407] [2023-11-06 22:53:37,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:53:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447078335] [2023-11-06 22:53:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:37,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:37,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:37,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:37,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:53:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:37,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:53:37,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2023-11-06 22:53:37,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:53:37,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447078335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:37,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:37,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299681896] [2023-11-06 22:53:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:37,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:53:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:37,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:53:37,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:53:37,946 INFO L87 Difference]: Start difference. First operand has 218 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 139 states have internal predecessors, (213), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-06 22:53:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:38,027 INFO L93 Difference]: Finished difference Result 429 states and 805 transitions. [2023-11-06 22:53:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:53:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 482 [2023-11-06 22:53:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:38,039 INFO L225 Difference]: With dead ends: 429 [2023-11-06 22:53:38,040 INFO L226 Difference]: Without dead ends: 214 [2023-11-06 22:53:38,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 481 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 22:53:38,050 INFO L413 NwaCegarLoop]: 360 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, 360 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 22:53:38,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:53:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-06 22:53:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-06 22:53:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.525925925925926) internal successors, (206), 135 states have internal predecessors, (206), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-06 22:53:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 360 transitions. [2023-11-06 22:53:38,169 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 360 transitions. Word has length 482 [2023-11-06 22:53:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:38,169 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 360 transitions. [2023-11-06 22:53:38,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-06 22:53:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 360 transitions. [2023-11-06 22:53:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-06 22:53:38,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:38,189 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:38,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:38,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:53:38,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:53:38,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash -180343957, now seen corresponding path program 1 times [2023-11-06 22:53:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132641913] [2023-11-06 22:53:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:38,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:53:38,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105720451] [2023-11-06 22:53:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:38,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:38,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:38,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:38,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:53:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:39,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:53:39,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-11-06 22:53:39,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:53:39,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:39,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132641913] [2023-11-06 22:53:39,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:53:39,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105720451] [2023-11-06 22:53:39,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105720451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:39,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:53:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792639022] [2023-11-06 22:53:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:39,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:39,283 INFO L87 Difference]: Start difference. First operand 214 states and 360 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-06 22:53:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:40,146 INFO L93 Difference]: Finished difference Result 1058 states and 1746 transitions. [2023-11-06 22:53:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:53:40,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 482 [2023-11-06 22:53:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:40,166 INFO L225 Difference]: With dead ends: 1058 [2023-11-06 22:53:40,167 INFO L226 Difference]: Without dead ends: 847 [2023-11-06 22:53:40,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:53:40,176 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 946 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:40,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1638 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:53:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-06 22:53:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 832. [2023-11-06 22:53:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 511 states have (on average 1.452054794520548) internal successors, (742), 516 states have internal predecessors, (742), 314 states have call successors, (314), 6 states have call predecessors, (314), 6 states have return successors, (314), 309 states have call predecessors, (314), 314 states have call successors, (314) [2023-11-06 22:53:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1370 transitions. [2023-11-06 22:53:40,407 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1370 transitions. Word has length 482 [2023-11-06 22:53:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:40,409 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1370 transitions. [2023-11-06 22:53:40,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-06 22:53:40,410 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1370 transitions. [2023-11-06 22:53:40,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-06 22:53:40,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:40,417 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:40,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:40,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:40,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:53:40,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:40,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1191461207, now seen corresponding path program 1 times [2023-11-06 22:53:40,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:40,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63203419] [2023-11-06 22:53:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:40,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:40,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:53:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464066042] [2023-11-06 22:53:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:40,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:40,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:40,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:40,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:53:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:41,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:53:41,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-11-06 22:53:41,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:53:41,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63203419] [2023-11-06 22:53:41,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:53:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464066042] [2023-11-06 22:53:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464066042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:41,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:41,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106100377] [2023-11-06 22:53:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:41,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:41,256 INFO L87 Difference]: Start difference. First operand 832 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-06 22:53:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:41,393 INFO L93 Difference]: Finished difference Result 1875 states and 3070 transitions. [2023-11-06 22:53:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:41,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 482 [2023-11-06 22:53:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:41,406 INFO L225 Difference]: With dead ends: 1875 [2023-11-06 22:53:41,406 INFO L226 Difference]: Without dead ends: 1046 [2023-11-06 22:53:41,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 480 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 22:53:41,411 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 214 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:41,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 865 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:53:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-11-06 22:53:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1042. [2023-11-06 22:53:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 621 states have (on average 1.3977455716586151) internal successors, (868), 628 states have internal predecessors, (868), 412 states have call successors, (412), 8 states have call predecessors, (412), 8 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2023-11-06 22:53:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1692 transitions. [2023-11-06 22:53:41,613 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1692 transitions. Word has length 482 [2023-11-06 22:53:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:41,618 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1692 transitions. [2023-11-06 22:53:41,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-06 22:53:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1692 transitions. [2023-11-06 22:53:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-06 22:53:41,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:41,626 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:41,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:41,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:53:41,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:41,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1465266477, now seen corresponding path program 1 times [2023-11-06 22:53:41,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:41,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679819734] [2023-11-06 22:53:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:41,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:41,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:53:41,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702540064] [2023-11-06 22:53:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:41,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:41,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:41,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:41,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:53:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:42,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:53:42,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-11-06 22:53:42,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:53:42,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:42,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679819734] [2023-11-06 22:53:42,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:53:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702540064] [2023-11-06 22:53:42,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702540064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:42,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:42,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:42,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397321551] [2023-11-06 22:53:42,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:42,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:42,438 INFO L87 Difference]: Start difference. First operand 1042 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-06 22:53:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:42,569 INFO L93 Difference]: Finished difference Result 2095 states and 3407 transitions. [2023-11-06 22:53:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:42,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 482 [2023-11-06 22:53:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:42,581 INFO L225 Difference]: With dead ends: 2095 [2023-11-06 22:53:42,582 INFO L226 Difference]: Without dead ends: 1056 [2023-11-06 22:53:42,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 480 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 22:53:42,590 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 10 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:42,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 716 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:53:42,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-11-06 22:53:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1044. [2023-11-06 22:53:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 630 states have internal predecessors, (870), 412 states have call successors, (412), 8 states have call predecessors, (412), 8 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2023-11-06 22:53:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1694 transitions. [2023-11-06 22:53:42,806 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1694 transitions. Word has length 482 [2023-11-06 22:53:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:42,807 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1694 transitions. [2023-11-06 22:53:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-11-06 22:53:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1694 transitions. [2023-11-06 22:53:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-06 22:53:42,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:42,815 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:42,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:43,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:43,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:53:43,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash -53737726, now seen corresponding path program 1 times [2023-11-06 22:53:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800050471] [2023-11-06 22:53:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:43,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:43,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:53:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198283461] [2023-11-06 22:53:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:43,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:43,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:43,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37fb4c2c-9de5-4610-ae6a-30d8682b926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process