./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.07.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.07.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:19,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:19,273 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:55:19,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:19,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:19,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:19,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:19,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:19,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:19,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:19,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:19,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:19,311 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:19,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:19,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:19,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:19,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:19,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:19,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:19,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:19,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:19,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:19,316 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:19,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:19,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:19,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:19,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:19,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:19,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:19,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:19,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:19,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:19,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:19,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:19,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:19,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:19,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:19,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:19,322 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:19,322 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_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f [2023-11-19 07:55:19,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:19,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:19,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:19,639 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:19,640 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:19,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/systemc/transmitter.07.cil.c [2023-11-19 07:55:22,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:23,128 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:23,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/sv-benchmarks/c/systemc/transmitter.07.cil.c [2023-11-19 07:55:23,153 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/data/65c317415/950f6241011b4f7ca9026d825e3a4d16/FLAGe17ca93f7 [2023-11-19 07:55:23,174 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/data/65c317415/950f6241011b4f7ca9026d825e3a4d16 [2023-11-19 07:55:23,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:23,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:23,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:23,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:23,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:23,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78866728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23, skipping insertion in model container [2023-11-19 07:55:23,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:23,387 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_04430717-e74e-4811-8684-fa58831cf07c/sv-benchmarks/c/systemc/transmitter.07.cil.c[706,719] [2023-11-19 07:55:23,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:23,506 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:23,518 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_04430717-e74e-4811-8684-fa58831cf07c/sv-benchmarks/c/systemc/transmitter.07.cil.c[706,719] [2023-11-19 07:55:23,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:23,614 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:23,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23 WrapperNode [2023-11-19 07:55:23,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:23,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:23,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:23,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:23,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,686 INFO L138 Inliner]: procedures = 42, calls = 51, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 564 [2023-11-19 07:55:23,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:23,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:23,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:23,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:23,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:23,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:23,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:23,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:23,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:23,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:23,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04430717-e74e-4811-8684-fa58831cf07c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-19 07:55:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-19 07:55:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-19 07:55:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-19 07:55:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-19 07:55:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-19 07:55:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 07:55:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 07:55:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-19 07:55:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-19 07:55:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-19 07:55:23,845 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-19 07:55:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:23,954 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:23,957 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:24,709 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:24,732 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:24,734 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-19 07:55:24,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:24 BoogieIcfgContainer [2023-11-19 07:55:24,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:24,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:24,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:24,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:24,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:23" (1/3) ... [2023-11-19 07:55:24,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f91554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:24, skipping insertion in model container [2023-11-19 07:55:24,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (2/3) ... [2023-11-19 07:55:24,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f91554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:24, skipping insertion in model container [2023-11-19 07:55:24,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:24" (3/3) ... [2023-11-19 07:55:24,757 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.07.cil.c [2023-11-19 07:55:24,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:24,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:55:24,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:24,867 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38a59ab6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:24,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:55:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 261 states, 233 states have (on average 1.6180257510729614) internal successors, (377), 235 states have internal predecessors, (377), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:55:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:24,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:24,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:24,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:24,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2130608969, now seen corresponding path program 1 times [2023-11-19 07:55:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536642342] [2023-11-19 07:55:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:24,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:25,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:25,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536642342] [2023-11-19 07:55:25,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536642342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:25,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:25,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934989959] [2023-11-19 07:55:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:25,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:25,561 INFO L87 Difference]: Start difference. First operand has 261 states, 233 states have (on average 1.6180257510729614) internal successors, (377), 235 states have internal predecessors, (377), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:27,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:27,114 INFO L93 Difference]: Finished difference Result 596 states and 962 transitions. [2023-11-19 07:55:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:27,134 INFO L225 Difference]: With dead ends: 596 [2023-11-19 07:55:27,134 INFO L226 Difference]: Without dead ends: 341 [2023-11-19 07:55:27,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:55:27,144 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 653 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:27,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 520 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:55:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-19 07:55:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 256. [2023-11-19 07:55:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 229 states have (on average 1.519650655021834) internal successors, (348), 230 states have internal predecessors, (348), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:55:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 388 transitions. [2023-11-19 07:55:27,223 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 388 transitions. Word has length 127 [2023-11-19 07:55:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:27,224 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 388 transitions. [2023-11-19 07:55:27,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 388 transitions. [2023-11-19 07:55:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:27,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:27,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:27,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:55:27,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:27,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:27,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1797965831, now seen corresponding path program 1 times [2023-11-19 07:55:27,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:27,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376329270] [2023-11-19 07:55:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:27,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:27,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376329270] [2023-11-19 07:55:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376329270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:27,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:27,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:55:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471407654] [2023-11-19 07:55:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:27,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:55:27,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:55:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:27,624 INFO L87 Difference]: Start difference. First operand 256 states and 388 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:29,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:29,819 INFO L93 Difference]: Finished difference Result 915 states and 1431 transitions. [2023-11-19 07:55:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:55:29,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:29,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:29,827 INFO L225 Difference]: With dead ends: 915 [2023-11-19 07:55:29,827 INFO L226 Difference]: Without dead ends: 674 [2023-11-19 07:55:29,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:55:29,831 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 974 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:29,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 869 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:55:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-11-19 07:55:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 504. [2023-11-19 07:55:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 455 states have (on average 1.5296703296703296) internal successors, (696), 457 states have internal predecessors, (696), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2023-11-19 07:55:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 769 transitions. [2023-11-19 07:55:29,896 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 769 transitions. Word has length 127 [2023-11-19 07:55:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:29,896 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 769 transitions. [2023-11-19 07:55:29,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 769 transitions. [2023-11-19 07:55:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:29,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:29,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:29,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:55:29,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:29,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash -371549894, now seen corresponding path program 1 times [2023-11-19 07:55:29,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:29,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032126230] [2023-11-19 07:55:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:29,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:30,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:30,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:30,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032126230] [2023-11-19 07:55:30,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032126230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:30,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:30,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:55:30,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723615763] [2023-11-19 07:55:30,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:30,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:30,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:30,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:30,230 INFO L87 Difference]: Start difference. First operand 504 states and 769 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:33,734 INFO L93 Difference]: Finished difference Result 1615 states and 2506 transitions. [2023-11-19 07:55:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:55:33,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:33,744 INFO L225 Difference]: With dead ends: 1615 [2023-11-19 07:55:33,744 INFO L226 Difference]: Without dead ends: 1126 [2023-11-19 07:55:33,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:33,748 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1067 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:33,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1685 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:55:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-19 07:55:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 737. [2023-11-19 07:55:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 666 states have (on average 1.5225225225225225) internal successors, (1014), 669 states have internal predecessors, (1014), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-11-19 07:55:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1119 transitions. [2023-11-19 07:55:33,815 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1119 transitions. Word has length 127 [2023-11-19 07:55:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:33,816 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1119 transitions. [2023-11-19 07:55:33,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1119 transitions. [2023-11-19 07:55:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:33,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:33,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:33,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:55:33,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:33,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1950252024, now seen corresponding path program 1 times [2023-11-19 07:55:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637668920] [2023-11-19 07:55:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:34,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:34,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637668920] [2023-11-19 07:55:34,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637668920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:34,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:34,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:55:34,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014249900] [2023-11-19 07:55:34,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:34,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:34,113 INFO L87 Difference]: Start difference. First operand 737 states and 1119 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:37,683 INFO L93 Difference]: Finished difference Result 2486 states and 3846 transitions. [2023-11-19 07:55:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:55:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:37,696 INFO L225 Difference]: With dead ends: 2486 [2023-11-19 07:55:37,697 INFO L226 Difference]: Without dead ends: 1764 [2023-11-19 07:55:37,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:37,701 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1062 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:37,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 1683 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 07:55:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-11-19 07:55:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1206. [2023-11-19 07:55:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1091 states have (on average 1.5169569202566453) internal successors, (1655), 1096 states have internal predecessors, (1655), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-11-19 07:55:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1828 transitions. [2023-11-19 07:55:37,789 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1828 transitions. Word has length 127 [2023-11-19 07:55:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:37,790 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1828 transitions. [2023-11-19 07:55:37,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1828 transitions. [2023-11-19 07:55:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:37,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:37,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:37,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:55:37,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:37,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash -191608454, now seen corresponding path program 1 times [2023-11-19 07:55:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251458365] [2023-11-19 07:55:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251458365] [2023-11-19 07:55:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251458365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:55:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624360924] [2023-11-19 07:55:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:38,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:38,030 INFO L87 Difference]: Start difference. First operand 1206 states and 1828 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:41,572 INFO L93 Difference]: Finished difference Result 4175 states and 6435 transitions. [2023-11-19 07:55:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:55:41,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:41,603 INFO L225 Difference]: With dead ends: 4175 [2023-11-19 07:55:41,604 INFO L226 Difference]: Without dead ends: 2984 [2023-11-19 07:55:41,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:41,620 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1061 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:41,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1683 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 07:55:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2023-11-19 07:55:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2147. [2023-11-19 07:55:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1944 states have (on average 1.5128600823045268) internal successors, (2941), 1953 states have internal predecessors, (2941), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2023-11-19 07:55:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3256 transitions. [2023-11-19 07:55:41,835 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3256 transitions. Word has length 127 [2023-11-19 07:55:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:41,835 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3256 transitions. [2023-11-19 07:55:41,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3256 transitions. [2023-11-19 07:55:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:41,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:41,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:41,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:55:41,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:41,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -814890056, now seen corresponding path program 1 times [2023-11-19 07:55:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749413150] [2023-11-19 07:55:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:41,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:42,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:42,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749413150] [2023-11-19 07:55:42,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749413150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:42,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:42,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:55:42,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793510941] [2023-11-19 07:55:42,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:42,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:42,116 INFO L87 Difference]: Start difference. First operand 2147 states and 3256 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:45,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:45,539 INFO L93 Difference]: Finished difference Result 7554 states and 11633 transitions. [2023-11-19 07:55:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:55:45,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:45,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:45,578 INFO L225 Difference]: With dead ends: 7554 [2023-11-19 07:55:45,579 INFO L226 Difference]: Without dead ends: 5422 [2023-11-19 07:55:45,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:45,590 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1060 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:45,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1683 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:55:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5422 states. [2023-11-19 07:55:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5422 to 4036. [2023-11-19 07:55:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 3657 states have (on average 1.5102543068088596) internal successors, (5523), 3674 states have internal predecessors, (5523), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2023-11-19 07:55:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 6140 transitions. [2023-11-19 07:55:45,890 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 6140 transitions. Word has length 127 [2023-11-19 07:55:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:45,891 INFO L495 AbstractCegarLoop]: Abstraction has 4036 states and 6140 transitions. [2023-11-19 07:55:45,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 6140 transitions. [2023-11-19 07:55:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:45,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:45,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:45,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:55:45,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:45,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:45,903 INFO L85 PathProgramCache]: Analyzing trace with hash -696448582, now seen corresponding path program 1 times [2023-11-19 07:55:45,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:45,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204443510] [2023-11-19 07:55:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:45,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:46,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:46,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204443510] [2023-11-19 07:55:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204443510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:46,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:55:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713497492] [2023-11-19 07:55:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:46,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:46,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:46,224 INFO L87 Difference]: Start difference. First operand 4036 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:49,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:49,827 INFO L93 Difference]: Finished difference Result 14313 states and 22091 transitions. [2023-11-19 07:55:49,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:55:49,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:49,894 INFO L225 Difference]: With dead ends: 14313 [2023-11-19 07:55:49,894 INFO L226 Difference]: Without dead ends: 10292 [2023-11-19 07:55:49,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:49,915 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1059 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:49,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1683 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:55:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10292 states. [2023-11-19 07:55:50,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10292 to 7829. [2023-11-19 07:55:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7829 states, 7098 states have (on average 1.508734854888701) internal successors, (10709), 7131 states have internal predecessors, (10709), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2023-11-19 07:55:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7829 states to 7829 states and 11984 transitions. [2023-11-19 07:55:50,586 INFO L78 Accepts]: Start accepts. Automaton has 7829 states and 11984 transitions. Word has length 127 [2023-11-19 07:55:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:50,587 INFO L495 AbstractCegarLoop]: Abstraction has 7829 states and 11984 transitions. [2023-11-19 07:55:50,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 7829 states and 11984 transitions. [2023-11-19 07:55:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:50,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:50,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:50,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:55:50,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:50,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:50,609 INFO L85 PathProgramCache]: Analyzing trace with hash 692845432, now seen corresponding path program 1 times [2023-11-19 07:55:50,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:50,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097060218] [2023-11-19 07:55:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097060218] [2023-11-19 07:55:50,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097060218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:50,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:50,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:55:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565622512] [2023-11-19 07:55:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:50,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:50,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:50,857 INFO L87 Difference]: Start difference. First operand 7829 states and 11984 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:54,434 INFO L93 Difference]: Finished difference Result 27832 states and 43201 transitions. [2023-11-19 07:55:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:55:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:55:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:54,547 INFO L225 Difference]: With dead ends: 27832 [2023-11-19 07:55:54,548 INFO L226 Difference]: Without dead ends: 20018 [2023-11-19 07:55:54,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:54,594 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1113 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:54,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1068 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 07:55:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20018 states. [2023-11-19 07:55:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20018 to 15446. [2023-11-19 07:55:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15446 states, 14011 states have (on average 1.5078866604810506) internal successors, (21127), 14076 states have internal predecessors, (21127), 980 states have call successors, (980), 390 states have call predecessors, (980), 454 states have return successors, (1773), 1043 states have call predecessors, (1773), 980 states have call successors, (1773) [2023-11-19 07:55:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 23880 transitions. [2023-11-19 07:55:55,781 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 23880 transitions. Word has length 127 [2023-11-19 07:55:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:55,782 INFO L495 AbstractCegarLoop]: Abstraction has 15446 states and 23880 transitions. [2023-11-19 07:55:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:55:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 23880 transitions. [2023-11-19 07:55:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:55:55,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:55,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:55,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:55:55,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:55,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:55,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1340548614, now seen corresponding path program 1 times [2023-11-19 07:55:55,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:55,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592493692] [2023-11-19 07:55:55,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:55,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:55,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:55:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:55:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:55:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:55:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:55:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:56,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:56,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592493692] [2023-11-19 07:55:56,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592493692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:56,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:56,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:55:56,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674655049] [2023-11-19 07:55:56,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:56,057 INFO L87 Difference]: Start difference. First operand 15446 states and 23880 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:56:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:00,488 INFO L93 Difference]: Finished difference Result 61015 states and 95241 transitions. [2023-11-19 07:56:00,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:56:00,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:56:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:00,723 INFO L225 Difference]: With dead ends: 61015 [2023-11-19 07:56:00,724 INFO L226 Difference]: Without dead ends: 45584 [2023-11-19 07:56:00,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:56:00,800 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1126 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:00,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1659 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:56:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45584 states. [2023-11-19 07:56:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45584 to 30487. [2023-11-19 07:56:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30487 states, 27708 states have (on average 1.5109354699003898) internal successors, (41865), 27837 states have internal predecessors, (41865), 1876 states have call successors, (1876), 774 states have call predecessors, (1876), 902 states have return successors, (4191), 2003 states have call predecessors, (4191), 1876 states have call successors, (4191) [2023-11-19 07:56:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30487 states to 30487 states and 47932 transitions. [2023-11-19 07:56:03,267 INFO L78 Accepts]: Start accepts. Automaton has 30487 states and 47932 transitions. Word has length 127 [2023-11-19 07:56:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:03,267 INFO L495 AbstractCegarLoop]: Abstraction has 30487 states and 47932 transitions. [2023-11-19 07:56:03,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:56:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 30487 states and 47932 transitions. [2023-11-19 07:56:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:56:03,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:03,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:03,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:56:03,333 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:03,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1087710008, now seen corresponding path program 1 times [2023-11-19 07:56:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:03,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926307124] [2023-11-19 07:56:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:03,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:56:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:56:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:56:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:56:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:56:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:03,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:03,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926307124] [2023-11-19 07:56:03,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926307124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:03,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:03,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:56:03,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718043671] [2023-11-19 07:56:03,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:03,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:56:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:56:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:03,560 INFO L87 Difference]: Start difference. First operand 30487 states and 47932 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:56:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:06,397 INFO L93 Difference]: Finished difference Result 69773 states and 111979 transitions. [2023-11-19 07:56:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:06,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2023-11-19 07:56:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:06,536 INFO L225 Difference]: With dead ends: 69773 [2023-11-19 07:56:06,537 INFO L226 Difference]: Without dead ends: 39301 [2023-11-19 07:56:06,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:56:06,617 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 829 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:06,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 697 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:56:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39301 states.