./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB --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 b74079121634b4e5d8b815834e604eed77442466d93875e78a8cab3fe135fa1f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:18,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:18,761 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:50:18,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:18,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:18,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:18,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:18,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:18,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:18,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:18,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:18,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:18,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:18,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:18,809 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:18,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:18,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:18,809 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:50:18,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:18,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:50:18,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:18,810 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:18,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:18,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:18,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:18,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:18,812 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:18,812 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:18,812 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB 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 -> b74079121634b4e5d8b815834e604eed77442466d93875e78a8cab3fe135fa1f [2024-11-27 19:50:19,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:19,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:19,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:19,175 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:19,176 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:19,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2024-11-27 19:50:22,295 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/data/71bb4bd4a/551ddf1ead704e5b947eae1c3edc94d9/FLAGfe0f1b5a7 [2024-11-27 19:50:22,624 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:22,625 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2024-11-27 19:50:22,637 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/data/71bb4bd4a/551ddf1ead704e5b947eae1c3edc94d9/FLAGfe0f1b5a7 [2024-11-27 19:50:22,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/data/71bb4bd4a/551ddf1ead704e5b947eae1c3edc94d9 [2024-11-27 19:50:22,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:22,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:22,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:22,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:22,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:22,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:22" (1/1) ... [2024-11-27 19:50:22,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a44f1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:22, skipping insertion in model container [2024-11-27 19:50:22,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:22" (1/1) ... [2024-11-27 19:50:22,717 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:22,895 WARN L250 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_9ec2f460-6b6d-4906-b9f9-153157c6b18e/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c[643,656] [2024-11-27 19:50:22,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:23,010 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:23,024 WARN L250 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_9ec2f460-6b6d-4906-b9f9-153157c6b18e/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c[643,656] [2024-11-27 19:50:23,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:23,103 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:23,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23 WrapperNode [2024-11-27 19:50:23,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:23,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:23,105 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:23,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:23,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,150 INFO L138 Inliner]: procedures = 29, calls = 31, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 185 [2024-11-27 19:50:23,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:23,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:23,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:23,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:23,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,189 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:50:23,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,194 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:23,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:23,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:23,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:23,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (1/1) ... [2024-11-27 19:50:23,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:23,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:23,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:23,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-27 19:50:23,293 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-27 19:50:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-27 19:50:23,293 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-27 19:50:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-27 19:50:23,293 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-27 19:50:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-27 19:50:23,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-27 19:50:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-27 19:50:23,294 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-27 19:50:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-27 19:50:23,294 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-27 19:50:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-27 19:50:23,294 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-27 19:50:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:23,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-27 19:50:23,296 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-27 19:50:23,389 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:23,392 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:23,796 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:23,796 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:23,813 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:23,813 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-27 19:50:23,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:23 BoogieIcfgContainer [2024-11-27 19:50:23,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:23,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:23,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:23,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:23,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:22" (1/3) ... [2024-11-27 19:50:23,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183a2cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:23, skipping insertion in model container [2024-11-27 19:50:23,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:23" (2/3) ... [2024-11-27 19:50:23,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183a2cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:23, skipping insertion in model container [2024-11-27 19:50:23,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:23" (3/3) ... [2024-11-27 19:50:23,825 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2024-11-27 19:50:23,842 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:23,845 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1.c that has 9 procedures, 99 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 19:50:23,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:23,927 INFO L333 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, 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;@20264e9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:23,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 76 states have (on average 1.5263157894736843) internal successors, (116), 79 states have internal predecessors, (116), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 19:50:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:23,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:23,944 INFO L218 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] [2024-11-27 19:50:23,944 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:23,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash -91894261, now seen corresponding path program 1 times [2024-11-27 19:50:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:23,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533453794] [2024-11-27 19:50:23,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:23,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533453794] [2024-11-27 19:50:24,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533453794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:24,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:24,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302543204] [2024-11-27 19:50:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:24,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:24,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:24,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:24,375 INFO L87 Difference]: Start difference. First operand has 99 states, 76 states have (on average 1.5263157894736843) internal successors, (116), 79 states have internal predecessors, (116), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:24,447 INFO L93 Difference]: Finished difference Result 189 states and 277 transitions. [2024-11-27 19:50:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:24,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2024-11-27 19:50:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:24,461 INFO L225 Difference]: With dead ends: 189 [2024-11-27 19:50:24,461 INFO L226 Difference]: Without dead ends: 93 [2024-11-27 19:50:24,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:24,472 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:24,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 130 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-27 19:50:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-27 19:50:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 73 states have internal predecessors, (101), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-27 19:50:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 127 transitions. [2024-11-27 19:50:24,537 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 127 transitions. Word has length 61 [2024-11-27 19:50:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:24,538 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 127 transitions. [2024-11-27 19:50:24,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 127 transitions. [2024-11-27 19:50:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:24,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:24,542 INFO L218 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] [2024-11-27 19:50:24,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:24,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:24,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1630234291, now seen corresponding path program 1 times [2024-11-27 19:50:24,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:24,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986443135] [2024-11-27 19:50:24,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:24,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986443135] [2024-11-27 19:50:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986443135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:24,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:24,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40581975] [2024-11-27 19:50:24,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:24,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:24,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:24,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:24,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:24,932 INFO L87 Difference]: Start difference. First operand 93 states and 127 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:25,391 INFO L93 Difference]: Finished difference Result 276 states and 387 transitions. [2024-11-27 19:50:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:25,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2024-11-27 19:50:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:25,396 INFO L225 Difference]: With dead ends: 276 [2024-11-27 19:50:25,396 INFO L226 Difference]: Without dead ends: 192 [2024-11-27 19:50:25,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:25,398 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 201 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:25,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 309 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:50:25,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-27 19:50:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 185. [2024-11-27 19:50:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 143 states have (on average 1.4055944055944056) internal successors, (201), 147 states have internal predecessors, (201), 25 states have call successors, (25), 15 states have call predecessors, (25), 16 states have return successors, (28), 24 states have call predecessors, (28), 23 states have call successors, (28) [2024-11-27 19:50:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 254 transitions. [2024-11-27 19:50:25,460 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 254 transitions. Word has length 61 [2024-11-27 19:50:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:25,462 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 254 transitions. [2024-11-27 19:50:25,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 254 transitions. [2024-11-27 19:50:25,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:25,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:25,468 INFO L218 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] [2024-11-27 19:50:25,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:50:25,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:25,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1426898291, now seen corresponding path program 1 times [2024-11-27 19:50:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917869886] [2024-11-27 19:50:25,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917869886] [2024-11-27 19:50:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917869886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:25,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:25,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706728791] [2024-11-27 19:50:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:25,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:25,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:25,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:25,817 INFO L87 Difference]: Start difference. First operand 185 states and 254 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:26,533 INFO L93 Difference]: Finished difference Result 490 states and 672 transitions. [2024-11-27 19:50:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:50:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2024-11-27 19:50:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:26,538 INFO L225 Difference]: With dead ends: 490 [2024-11-27 19:50:26,538 INFO L226 Difference]: Without dead ends: 321 [2024-11-27 19:50:26,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:50:26,540 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 219 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:26,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 562 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:50:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-27 19:50:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 277. [2024-11-27 19:50:26,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 215 states have (on average 1.3953488372093024) internal successors, (300), 221 states have internal predecessors, (300), 36 states have call successors, (36), 22 states have call predecessors, (36), 25 states have return successors, (47), 36 states have call predecessors, (47), 34 states have call successors, (47) [2024-11-27 19:50:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 383 transitions. [2024-11-27 19:50:26,645 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 383 transitions. Word has length 61 [2024-11-27 19:50:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:26,645 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 383 transitions. [2024-11-27 19:50:26,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 383 transitions. [2024-11-27 19:50:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:26,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:26,655 INFO L218 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] [2024-11-27 19:50:26,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:50:26,655 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:26,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash 512263755, now seen corresponding path program 1 times [2024-11-27 19:50:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:26,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605607091] [2024-11-27 19:50:26,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:26,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:26,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:26,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605607091] [2024-11-27 19:50:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605607091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:26,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:26,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:26,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417425349] [2024-11-27 19:50:26,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:26,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:26,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:26,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:26,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:26,801 INFO L87 Difference]: Start difference. First operand 277 states and 383 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:50:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:26,878 INFO L93 Difference]: Finished difference Result 537 states and 744 transitions. [2024-11-27 19:50:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2024-11-27 19:50:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:26,883 INFO L225 Difference]: With dead ends: 537 [2024-11-27 19:50:26,885 INFO L226 Difference]: Without dead ends: 282 [2024-11-27 19:50:26,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:26,889 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:26,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 615 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-27 19:50:26,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-11-27 19:50:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 219 states have (on average 1.3789954337899544) internal successors, (302), 225 states have internal predecessors, (302), 36 states have call successors, (36), 22 states have call predecessors, (36), 26 states have return successors, (48), 37 states have call predecessors, (48), 34 states have call successors, (48) [2024-11-27 19:50:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 386 transitions. [2024-11-27 19:50:26,942 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 386 transitions. Word has length 61 [2024-11-27 19:50:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:26,942 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 386 transitions. [2024-11-27 19:50:26,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:50:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 386 transitions. [2024-11-27 19:50:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:26,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:26,949 INFO L218 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] [2024-11-27 19:50:26,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:50:26,949 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:26,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -331741747, now seen corresponding path program 1 times [2024-11-27 19:50:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:26,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406583036] [2024-11-27 19:50:26,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:26,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:27,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:27,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406583036] [2024-11-27 19:50:27,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406583036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:27,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:27,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:27,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002488576] [2024-11-27 19:50:27,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:27,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:27,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:27,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:27,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:27,099 INFO L87 Difference]: Start difference. First operand 282 states and 386 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-27 19:50:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:27,938 INFO L93 Difference]: Finished difference Result 2208 states and 3070 transitions. [2024-11-27 19:50:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:50:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 61 [2024-11-27 19:50:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:27,960 INFO L225 Difference]: With dead ends: 2208 [2024-11-27 19:50:27,961 INFO L226 Difference]: Without dead ends: 1948 [2024-11-27 19:50:27,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:50:27,964 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 801 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:27,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1140 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:50:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-11-27 19:50:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1818. [2024-11-27 19:50:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1416 states have (on average 1.3368644067796611) internal successors, (1893), 1450 states have internal predecessors, (1893), 201 states have call successors, (201), 166 states have call predecessors, (201), 200 states have return successors, (317), 204 states have call predecessors, (317), 199 states have call successors, (317) [2024-11-27 19:50:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2411 transitions. [2024-11-27 19:50:28,231 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2411 transitions. Word has length 61 [2024-11-27 19:50:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:28,232 INFO L471 AbstractCegarLoop]: Abstraction has 1818 states and 2411 transitions. [2024-11-27 19:50:28,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-27 19:50:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2411 transitions. [2024-11-27 19:50:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:28,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:28,234 INFO L218 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] [2024-11-27 19:50:28,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:50:28,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:28,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash 587232876, now seen corresponding path program 1 times [2024-11-27 19:50:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247378505] [2024-11-27 19:50:28,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:28,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247378505] [2024-11-27 19:50:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247378505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:28,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328693069] [2024-11-27 19:50:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:28,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:28,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:28,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:28,333 INFO L87 Difference]: Start difference. First operand 1818 states and 2411 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:50:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:28,538 INFO L93 Difference]: Finished difference Result 3659 states and 4902 transitions. [2024-11-27 19:50:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2024-11-27 19:50:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:28,565 INFO L225 Difference]: With dead ends: 3659 [2024-11-27 19:50:28,565 INFO L226 Difference]: Without dead ends: 1863 [2024-11-27 19:50:28,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:28,570 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:28,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 615 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:28,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2024-11-27 19:50:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2024-11-27 19:50:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1452 states have (on average 1.3181818181818181) internal successors, (1914), 1486 states have internal predecessors, (1914), 201 states have call successors, (201), 166 states have call predecessors, (201), 209 states have return successors, (335), 213 states have call predecessors, (335), 199 states have call successors, (335) [2024-11-27 19:50:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2450 transitions. [2024-11-27 19:50:28,766 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2450 transitions. Word has length 61 [2024-11-27 19:50:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:28,766 INFO L471 AbstractCegarLoop]: Abstraction has 1863 states and 2450 transitions. [2024-11-27 19:50:28,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:50:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2450 transitions. [2024-11-27 19:50:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:28,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:28,768 INFO L218 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] [2024-11-27 19:50:28,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:50:28,768 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:28,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash 649272490, now seen corresponding path program 1 times [2024-11-27 19:50:28,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:28,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634346220] [2024-11-27 19:50:28,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:28,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:28,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:28,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634346220] [2024-11-27 19:50:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634346220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:28,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:28,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:28,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137702705] [2024-11-27 19:50:28,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:28,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:28,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:28,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:28,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:28,958 INFO L87 Difference]: Start difference. First operand 1863 states and 2450 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:29,625 INFO L93 Difference]: Finished difference Result 3559 states and 4639 transitions. [2024-11-27 19:50:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 19:50:29,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2024-11-27 19:50:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:29,643 INFO L225 Difference]: With dead ends: 3559 [2024-11-27 19:50:29,643 INFO L226 Difference]: Without dead ends: 2065 [2024-11-27 19:50:29,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:50:29,649 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 226 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:29,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 369 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:50:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2024-11-27 19:50:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1873. [2024-11-27 19:50:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1464 states have (on average 1.310792349726776) internal successors, (1919), 1493 states have internal predecessors, (1919), 202 states have call successors, (202), 167 states have call predecessors, (202), 206 states have return successors, (319), 215 states have call predecessors, (319), 200 states have call successors, (319) [2024-11-27 19:50:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2440 transitions. [2024-11-27 19:50:29,886 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2440 transitions. Word has length 61 [2024-11-27 19:50:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:29,886 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 2440 transitions. [2024-11-27 19:50:29,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2440 transitions. [2024-11-27 19:50:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 19:50:29,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:29,888 INFO L218 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] [2024-11-27 19:50:29,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:50:29,888 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:29,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1071974316, now seen corresponding path program 1 times [2024-11-27 19:50:29,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:29,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681349966] [2024-11-27 19:50:29,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:30,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:30,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681349966] [2024-11-27 19:50:30,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681349966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:30,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:30,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:30,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100511346] [2024-11-27 19:50:30,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:30,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:30,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:30,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:30,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:30,008 INFO L87 Difference]: Start difference. First operand 1873 states and 2440 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:30,661 INFO L93 Difference]: Finished difference Result 5502 states and 7211 transitions. [2024-11-27 19:50:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:30,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2024-11-27 19:50:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:30,685 INFO L225 Difference]: With dead ends: 5502 [2024-11-27 19:50:30,685 INFO L226 Difference]: Without dead ends: 3654 [2024-11-27 19:50:30,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:30,692 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 182 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:30,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 183 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:50:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2024-11-27 19:50:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3650. [2024-11-27 19:50:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 2828 states have (on average 1.2772277227722773) internal successors, (3612), 2887 states have internal predecessors, (3612), 404 states have call successors, (404), 333 states have call predecessors, (404), 417 states have return successors, (697), 435 states have call predecessors, (697), 402 states have call successors, (697) [2024-11-27 19:50:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4713 transitions. [2024-11-27 19:50:31,070 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4713 transitions. Word has length 61 [2024-11-27 19:50:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:31,070 INFO L471 AbstractCegarLoop]: Abstraction has 3650 states and 4713 transitions. [2024-11-27 19:50:31,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 19:50:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4713 transitions. [2024-11-27 19:50:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 19:50:31,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:31,073 INFO L218 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] [2024-11-27 19:50:31,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:50:31,073 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:31,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:31,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2074671030, now seen corresponding path program 1 times [2024-11-27 19:50:31,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:31,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789785232] [2024-11-27 19:50:31,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:31,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789785232] [2024-11-27 19:50:31,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789785232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:31,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:31,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:31,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553299556] [2024-11-27 19:50:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:31,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:31,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:31,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:31,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:31,120 INFO L87 Difference]: Start difference. First operand 3650 states and 4713 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:50:31,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:31,723 INFO L93 Difference]: Finished difference Result 9627 states and 12575 transitions. [2024-11-27 19:50:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:31,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-27 19:50:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:31,764 INFO L225 Difference]: With dead ends: 9627 [2024-11-27 19:50:31,764 INFO L226 Difference]: Without dead ends: 5981 [2024-11-27 19:50:31,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:31,776 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 101 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:31,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 229 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2024-11-27 19:50:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 5847. [2024-11-27 19:50:32,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5847 states, 4487 states have (on average 1.2716737240918208) internal successors, (5706), 4563 states have internal predecessors, (5706), 665 states have call successors, (665), 565 states have call predecessors, (665), 694 states have return successors, (1151), 724 states have call predecessors, (1151), 663 states have call successors, (1151) [2024-11-27 19:50:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 7522 transitions. [2024-11-27 19:50:32,335 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 7522 transitions. Word has length 62 [2024-11-27 19:50:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:32,335 INFO L471 AbstractCegarLoop]: Abstraction has 5847 states and 7522 transitions. [2024-11-27 19:50:32,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:50:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 7522 transitions. [2024-11-27 19:50:32,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 19:50:32,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:32,338 INFO L218 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] [2024-11-27 19:50:32,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:50:32,338 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:32,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash -252913356, now seen corresponding path program 1 times [2024-11-27 19:50:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933135493] [2024-11-27 19:50:32,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:32,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:32,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:32,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933135493] [2024-11-27 19:50:32,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933135493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:32,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:32,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223018575] [2024-11-27 19:50:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:32,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:32,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:32,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:32,455 INFO L87 Difference]: Start difference. First operand 5847 states and 7522 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 19:50:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:33,084 INFO L93 Difference]: Finished difference Result 6965 states and 8901 transitions. [2024-11-27 19:50:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2024-11-27 19:50:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:33,132 INFO L225 Difference]: With dead ends: 6965 [2024-11-27 19:50:33,132 INFO L226 Difference]: Without dead ends: 6962 [2024-11-27 19:50:33,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:33,137 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 265 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:33,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 223 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6962 states. [2024-11-27 19:50:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 6863. [2024-11-27 19:50:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6863 states, 5252 states have (on average 1.2638994668697638) internal successors, (6638), 5337 states have internal predecessors, (6638), 791 states have call successors, (791), 679 states have call predecessors, (791), 819 states have return successors, (1344), 852 states have call predecessors, (1344), 790 states have call successors, (1344) [2024-11-27 19:50:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6863 states to 6863 states and 8773 transitions. [2024-11-27 19:50:34,098 INFO L78 Accepts]: Start accepts. Automaton has 6863 states and 8773 transitions. Word has length 67 [2024-11-27 19:50:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:34,099 INFO L471 AbstractCegarLoop]: Abstraction has 6863 states and 8773 transitions. [2024-11-27 19:50:34,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 19:50:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6863 states and 8773 transitions. [2024-11-27 19:50:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 19:50:34,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:34,103 INFO L218 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] [2024-11-27 19:50:34,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:50:34,104 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:34,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:34,105 INFO L85 PathProgramCache]: Analyzing trace with hash 749268693, now seen corresponding path program 1 times [2024-11-27 19:50:34,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:34,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067818079] [2024-11-27 19:50:34,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:34,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067818079] [2024-11-27 19:50:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067818079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138302218] [2024-11-27 19:50:34,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:34,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:34,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:34,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:34,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:34,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:50:34,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:34,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:34,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138302218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:34,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:34,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-27 19:50:34,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943625436] [2024-11-27 19:50:34,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:34,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:50:34,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:34,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:50:34,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:34,973 INFO L87 Difference]: Start difference. First operand 6863 states and 8773 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 19:50:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:36,662 INFO L93 Difference]: Finished difference Result 14739 states and 18746 transitions. [2024-11-27 19:50:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:50:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2024-11-27 19:50:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:36,747 INFO L225 Difference]: With dead ends: 14739 [2024-11-27 19:50:36,747 INFO L226 Difference]: Without dead ends: 14736 [2024-11-27 19:50:36,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:36,756 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 418 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:36,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1182 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:50:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14736 states. [2024-11-27 19:50:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14736 to 13426. [2024-11-27 19:50:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13426 states, 10291 states have (on average 1.2631425517442425) internal successors, (12999), 10456 states have internal predecessors, (12999), 1523 states have call successors, (1523), 1313 states have call predecessors, (1523), 1611 states have return successors, (2611), 1662 states have call predecessors, (2611), 1522 states have call successors, (2611) [2024-11-27 19:50:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13426 states to 13426 states and 17133 transitions. [2024-11-27 19:50:38,494 INFO L78 Accepts]: Start accepts. Automaton has 13426 states and 17133 transitions. Word has length 68 [2024-11-27 19:50:38,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:38,495 INFO L471 AbstractCegarLoop]: Abstraction has 13426 states and 17133 transitions. [2024-11-27 19:50:38,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 19:50:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 13426 states and 17133 transitions. [2024-11-27 19:50:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 19:50:38,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:38,500 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:38,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:38,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:38,701 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:38,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash 763238867, now seen corresponding path program 2 times [2024-11-27 19:50:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:38,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912106087] [2024-11-27 19:50:38,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:50:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:38,725 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:50:38,726 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:38,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912106087] [2024-11-27 19:50:38,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912106087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:38,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:38,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:38,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443691698] [2024-11-27 19:50:38,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:38,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:38,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:38,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:38,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:38,776 INFO L87 Difference]: Start difference. First operand 13426 states and 17133 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 19:50:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:39,538 INFO L93 Difference]: Finished difference Result 20152 states and 25822 transitions. [2024-11-27 19:50:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2024-11-27 19:50:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:39,584 INFO L225 Difference]: With dead ends: 20152 [2024-11-27 19:50:39,585 INFO L226 Difference]: Without dead ends: 7576 [2024-11-27 19:50:39,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:39,618 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 97 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:39,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 312 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2024-11-27 19:50:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 7478. [2024-11-27 19:50:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7478 states, 5744 states have (on average 1.233983286908078) internal successors, (7088), 5823 states have internal predecessors, (7088), 857 states have call successors, (857), 735 states have call predecessors, (857), 876 states have return successors, (1357), 925 states have call predecessors, (1357), 856 states have call successors, (1357) [2024-11-27 19:50:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7478 states to 7478 states and 9302 transitions. [2024-11-27 19:50:40,454 INFO L78 Accepts]: Start accepts. Automaton has 7478 states and 9302 transitions. Word has length 70 [2024-11-27 19:50:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:40,454 INFO L471 AbstractCegarLoop]: Abstraction has 7478 states and 9302 transitions. [2024-11-27 19:50:40,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 19:50:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 7478 states and 9302 transitions. [2024-11-27 19:50:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-27 19:50:40,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:40,460 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:40,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:50:40,460 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:40,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1130109256, now seen corresponding path program 1 times [2024-11-27 19:50:40,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:40,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454655539] [2024-11-27 19:50:40,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:40,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 19:50:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:40,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454655539] [2024-11-27 19:50:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454655539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:40,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9119636] [2024-11-27 19:50:40,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:40,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:40,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:40,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:40,624 INFO L87 Difference]: Start difference. First operand 7478 states and 9302 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 19:50:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:43,175 INFO L93 Difference]: Finished difference Result 22464 states and 28073 transitions. [2024-11-27 19:50:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 19:50:43,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2024-11-27 19:50:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:43,270 INFO L225 Difference]: With dead ends: 22464 [2024-11-27 19:50:43,270 INFO L226 Difference]: Without dead ends: 15014 [2024-11-27 19:50:43,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:50:43,299 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 478 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:43,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 497 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:50:43,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15014 states. [2024-11-27 19:50:45,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15014 to 14371. [2024-11-27 19:50:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 10958 states have (on average 1.2080671655411572) internal successors, (13238), 11141 states have internal predecessors, (13238), 1664 states have call successors, (1664), 1435 states have call predecessors, (1664), 1748 states have return successors, (2856), 1800 states have call predecessors, (2856), 1663 states have call successors, (2856) [2024-11-27 19:50:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 17758 transitions. [2024-11-27 19:50:45,084 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 17758 transitions. Word has length 79 [2024-11-27 19:50:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:45,085 INFO L471 AbstractCegarLoop]: Abstraction has 14371 states and 17758 transitions. [2024-11-27 19:50:45,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 19:50:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 17758 transitions. [2024-11-27 19:50:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-27 19:50:45,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:45,092 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:45,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:50:45,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:45,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash 403942584, now seen corresponding path program 1 times [2024-11-27 19:50:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085535894] [2024-11-27 19:50:45,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 19:50:45,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:45,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085535894] [2024-11-27 19:50:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085535894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 19:50:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60992814] [2024-11-27 19:50:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:45,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:50:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:45,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:50:45,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:45,255 INFO L87 Difference]: Start difference. First operand 14371 states and 17758 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 19:50:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:47,442 INFO L93 Difference]: Finished difference Result 25945 states and 32083 transitions. [2024-11-27 19:50:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 19:50:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2024-11-27 19:50:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:47,512 INFO L225 Difference]: With dead ends: 25945 [2024-11-27 19:50:47,512 INFO L226 Difference]: Without dead ends: 12203 [2024-11-27 19:50:47,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-27 19:50:47,546 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 809 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:47,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 602 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:50:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12203 states. [2024-11-27 19:50:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12203 to 11475. [2024-11-27 19:50:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11475 states, 8794 states have (on average 1.1983170343415965) internal successors, (10538), 8933 states have internal predecessors, (10538), 1299 states have call successors, (1299), 1116 states have call predecessors, (1299), 1381 states have return successors, (2055), 1431 states have call predecessors, (2055), 1298 states have call successors, (2055) [2024-11-27 19:50:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11475 states to 11475 states and 13892 transitions. [2024-11-27 19:50:48,743 INFO L78 Accepts]: Start accepts. Automaton has 11475 states and 13892 transitions. Word has length 85 [2024-11-27 19:50:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:48,744 INFO L471 AbstractCegarLoop]: Abstraction has 11475 states and 13892 transitions. [2024-11-27 19:50:48,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 19:50:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11475 states and 13892 transitions. [2024-11-27 19:50:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-27 19:50:48,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:48,758 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:48,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:50:48,758 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:48,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1733557854, now seen corresponding path program 1 times [2024-11-27 19:50:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:48,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302926548] [2024-11-27 19:50:48,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:48,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 19:50:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302926548] [2024-11-27 19:50:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302926548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270787617] [2024-11-27 19:50:48,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:48,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:48,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:48,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:48,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:50:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:49,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 19:50:49,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 19:50:49,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:49,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270787617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:49,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:49,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-27 19:50:49,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358491924] [2024-11-27 19:50:49,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:49,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:49,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:49,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:49,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:49,215 INFO L87 Difference]: Start difference. First operand 11475 states and 13892 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:50:49,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:49,719 INFO L93 Difference]: Finished difference Result 16490 states and 19960 transitions. [2024-11-27 19:50:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2024-11-27 19:50:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:49,750 INFO L225 Difference]: With dead ends: 16490 [2024-11-27 19:50:49,751 INFO L226 Difference]: Without dead ends: 5043 [2024-11-27 19:50:49,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:49,770 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:49,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 601 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2024-11-27 19:50:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 4855. [2024-11-27 19:50:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 3801 states have (on average 1.185214417258616) internal successors, (4505), 3843 states have internal predecessors, (4505), 505 states have call successors, (505), 417 states have call predecessors, (505), 548 states have return successors, (800), 594 states have call predecessors, (800), 504 states have call successors, (800) [2024-11-27 19:50:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 5810 transitions. [2024-11-27 19:50:50,186 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 5810 transitions. Word has length 138 [2024-11-27 19:50:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:50,186 INFO L471 AbstractCegarLoop]: Abstraction has 4855 states and 5810 transitions. [2024-11-27 19:50:50,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:50:50,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 5810 transitions. [2024-11-27 19:50:50,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 19:50:50,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:50,194 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:50,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:50,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:50,395 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:50,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1242294434, now seen corresponding path program 1 times [2024-11-27 19:50:50,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:50,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509745536] [2024-11-27 19:50:50,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:50,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 19:50:50,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509745536] [2024-11-27 19:50:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509745536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983821191] [2024-11-27 19:50:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:50,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:50,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:50,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:50,453 INFO L87 Difference]: Start difference. First operand 4855 states and 5810 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 19:50:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:50,711 INFO L93 Difference]: Finished difference Result 5168 states and 6176 transitions. [2024-11-27 19:50:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 140 [2024-11-27 19:50:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:50,735 INFO L225 Difference]: With dead ends: 5168 [2024-11-27 19:50:50,735 INFO L226 Difference]: Without dead ends: 4447 [2024-11-27 19:50:50,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:50,740 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:50,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 123 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2024-11-27 19:50:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 4447. [2024-11-27 19:50:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4447 states, 3489 states have (on average 1.1871596445973058) internal successors, (4142), 3528 states have internal predecessors, (4142), 459 states have call successors, (459), 377 states have call predecessors, (459), 498 states have return successors, (737), 541 states have call predecessors, (737), 458 states have call successors, (737) [2024-11-27 19:50:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 5338 transitions. [2024-11-27 19:50:51,358 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 5338 transitions. Word has length 140 [2024-11-27 19:50:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:51,359 INFO L471 AbstractCegarLoop]: Abstraction has 4447 states and 5338 transitions. [2024-11-27 19:50:51,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 19:50:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 5338 transitions. [2024-11-27 19:50:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 19:50:51,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:51,370 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:51,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 19:50:51,370 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:51,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash -640445158, now seen corresponding path program 1 times [2024-11-27 19:50:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500632891] [2024-11-27 19:50:51,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-27 19:50:51,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:51,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500632891] [2024-11-27 19:50:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500632891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:51,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:51,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187356221] [2024-11-27 19:50:51,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:51,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:51,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:51,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:51,451 INFO L87 Difference]: Start difference. First operand 4447 states and 5338 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 19:50:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:51,874 INFO L93 Difference]: Finished difference Result 6260 states and 7478 transitions. [2024-11-27 19:50:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:51,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 150 [2024-11-27 19:50:51,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:51,890 INFO L225 Difference]: With dead ends: 6260 [2024-11-27 19:50:51,891 INFO L226 Difference]: Without dead ends: 2000 [2024-11-27 19:50:51,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:51,898 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:51,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 222 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2024-11-27 19:50:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 2000. [2024-11-27 19:50:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1577 states have (on average 1.1686746987951808) internal successors, (1843), 1594 states have internal predecessors, (1843), 202 states have call successors, (202), 168 states have call predecessors, (202), 220 states have return successors, (300), 237 states have call predecessors, (300), 201 states have call successors, (300) [2024-11-27 19:50:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2345 transitions. [2024-11-27 19:50:52,102 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2345 transitions. Word has length 150 [2024-11-27 19:50:52,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:52,103 INFO L471 AbstractCegarLoop]: Abstraction has 2000 states and 2345 transitions. [2024-11-27 19:50:52,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 19:50:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2345 transitions. [2024-11-27 19:50:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 19:50:52,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:52,109 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:52,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 19:50:52,109 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:52,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -928816475, now seen corresponding path program 1 times [2024-11-27 19:50:52,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:52,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096726937] [2024-11-27 19:50:52,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:52,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-27 19:50:52,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096726937] [2024-11-27 19:50:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096726937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803382850] [2024-11-27 19:50:52,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:52,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:52,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:52,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:52,220 INFO L87 Difference]: Start difference. First operand 2000 states and 2345 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-27 19:50:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:52,645 INFO L93 Difference]: Finished difference Result 3704 states and 4386 transitions. [2024-11-27 19:50:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:52,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 149 [2024-11-27 19:50:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:52,664 INFO L225 Difference]: With dead ends: 3704 [2024-11-27 19:50:52,664 INFO L226 Difference]: Without dead ends: 2018 [2024-11-27 19:50:52,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:52,668 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 88 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:52,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 285 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:50:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2024-11-27 19:50:52,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1635. [2024-11-27 19:50:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1296 states have (on average 1.1736111111111112) internal successors, (1521), 1314 states have internal predecessors, (1521), 162 states have call successors, (162), 136 states have call predecessors, (162), 176 states have return successors, (239), 184 states have call predecessors, (239), 161 states have call successors, (239) [2024-11-27 19:50:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1922 transitions. [2024-11-27 19:50:52,865 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1922 transitions. Word has length 149 [2024-11-27 19:50:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:52,866 INFO L471 AbstractCegarLoop]: Abstraction has 1635 states and 1922 transitions. [2024-11-27 19:50:52,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-27 19:50:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1922 transitions. [2024-11-27 19:50:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 19:50:52,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:52,870 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:52,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 19:50:52,871 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:52,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1600604083, now seen corresponding path program 1 times [2024-11-27 19:50:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:52,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590798656] [2024-11-27 19:50:52,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 19:50:53,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:53,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590798656] [2024-11-27 19:50:53,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590798656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:53,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438243343] [2024-11-27 19:50:53,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:53,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:53,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:53,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:53,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:50:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:53,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 19:50:53,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 19:50:53,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-27 19:50:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438243343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:53,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-27 19:50:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372234436] [2024-11-27 19:50:53,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:53,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 19:50:53,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:53,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 19:50:53,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:50:53,905 INFO L87 Difference]: Start difference. First operand 1635 states and 1922 transitions. Second operand has 13 states, 13 states have (on average 17.615384615384617) internal successors, (229), 13 states have internal predecessors, (229), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-27 19:50:55,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:55,160 INFO L93 Difference]: Finished difference Result 3688 states and 4436 transitions. [2024-11-27 19:50:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 19:50:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.615384615384617) internal successors, (229), 13 states have internal predecessors, (229), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 152 [2024-11-27 19:50:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:55,178 INFO L225 Difference]: With dead ends: 3688 [2024-11-27 19:50:55,178 INFO L226 Difference]: Without dead ends: 1975 [2024-11-27 19:50:55,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2024-11-27 19:50:55,183 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 709 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:55,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 381 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:50:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2024-11-27 19:50:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1704. [2024-11-27 19:50:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1327 states have (on average 1.1446872645064055) internal successors, (1519), 1349 states have internal predecessors, (1519), 182 states have call successors, (182), 158 states have call predecessors, (182), 194 states have return successors, (288), 196 states have call predecessors, (288), 181 states have call successors, (288) [2024-11-27 19:50:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 1989 transitions. [2024-11-27 19:50:55,439 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 1989 transitions. Word has length 152 [2024-11-27 19:50:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:55,440 INFO L471 AbstractCegarLoop]: Abstraction has 1704 states and 1989 transitions. [2024-11-27 19:50:55,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.615384615384617) internal successors, (229), 13 states have internal predecessors, (229), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-27 19:50:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 1989 transitions. [2024-11-27 19:50:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-27 19:50:55,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:55,446 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:55,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:55,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:55,648 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:55,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1308475237, now seen corresponding path program 1 times [2024-11-27 19:50:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106146171] [2024-11-27 19:50:55,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-27 19:50:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106146171] [2024-11-27 19:50:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106146171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701858042] [2024-11-27 19:50:55,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:55,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:55,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:50:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:55,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:50:55,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-27 19:50:56,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701858042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:56,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-27 19:50:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491538774] [2024-11-27 19:50:56,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:56,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:56,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:56,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:50:56,026 INFO L87 Difference]: Start difference. First operand 1704 states and 1989 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:50:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:56,502 INFO L93 Difference]: Finished difference Result 3304 states and 3867 transitions. [2024-11-27 19:50:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:50:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 168 [2024-11-27 19:50:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:56,518 INFO L225 Difference]: With dead ends: 3304 [2024-11-27 19:50:56,518 INFO L226 Difference]: Without dead ends: 1437 [2024-11-27 19:50:56,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:56,523 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 146 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:56,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 205 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:50:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-11-27 19:50:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1364. [2024-11-27 19:50:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1067 states have (on average 1.1358950328022492) internal successors, (1212), 1079 states have internal predecessors, (1212), 145 states have call successors, (145), 124 states have call predecessors, (145), 151 states have return successors, (214), 160 states have call predecessors, (214), 144 states have call successors, (214) [2024-11-27 19:50:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1571 transitions. [2024-11-27 19:50:56,744 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1571 transitions. Word has length 168 [2024-11-27 19:50:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:56,744 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 1571 transitions. [2024-11-27 19:50:56,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:50:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1571 transitions. [2024-11-27 19:50:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-27 19:50:56,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:56,751 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:56,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:50:56,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:56,952 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:56,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2102692917, now seen corresponding path program 1 times [2024-11-27 19:50:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89995526] [2024-11-27 19:50:56,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 54 proven. 7 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-27 19:50:57,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89995526] [2024-11-27 19:50:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89995526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986941766] [2024-11-27 19:50:57,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:57,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:57,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:57,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:57,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:50:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:57,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 19:50:57,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 240 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 19:50:57,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 91 proven. 7 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-27 19:50:57,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986941766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:57,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:57,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-27 19:50:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083832799] [2024-11-27 19:50:57,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:57,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 19:50:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:57,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 19:50:57,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:50:57,819 INFO L87 Difference]: Start difference. First operand 1364 states and 1571 transitions. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 8 states have internal predecessors, (203), 4 states have call successors, (38), 6 states have call predecessors, (38), 8 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2024-11-27 19:50:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:58,340 INFO L93 Difference]: Finished difference Result 1653 states and 1892 transitions. [2024-11-27 19:50:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 19:50:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 8 states have internal predecessors, (203), 4 states have call successors, (38), 6 states have call predecessors, (38), 8 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 238 [2024-11-27 19:50:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:58,352 INFO L225 Difference]: With dead ends: 1653 [2024-11-27 19:50:58,352 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 19:50:58,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 472 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:50:58,355 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 199 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:58,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 341 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:50:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 19:50:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 19:50:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 19:50:58,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2024-11-27 19:50:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:58,367 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 19:50:58,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 8 states have internal predecessors, (203), 4 states have call successors, (38), 6 states have call predecessors, (38), 8 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2024-11-27 19:50:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 19:50:58,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 19:50:58,371 INFO L782 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 19:50:58,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 19:50:58,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:58,576 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:58,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 19:51:37,179 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 19:51:37,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 07:51:37 BoogieIcfgContainer [2024-11-27 19:51:37,246 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 19:51:37,247 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 19:51:37,251 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 19:51:37,252 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 19:51:37,252 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:23" (3/4) ... [2024-11-27 19:51:37,256 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 19:51:37,270 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure activate_threads [2024-11-27 19:51:37,274 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2024-11-27 19:51:37,275 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_do_read_c_triggered [2024-11-27 19:51:37,275 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fire_delta_events [2024-11-27 19:51:37,275 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure update_channels [2024-11-27 19:51:37,275 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reset_delta_events [2024-11-27 19:51:37,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_do_write_p_triggered [2024-11-27 19:51:37,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2024-11-27 19:51:37,285 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-27 19:51:37,286 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 19:51:37,286 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 19:51:37,287 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 19:51:37,458 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 19:51:37,459 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 19:51:37,459 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 19:51:37,461 INFO L158 Benchmark]: Toolchain (without parser) took 74793.18ms. Allocated memory was 117.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 92.7MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 613.4MB. Max. memory is 16.1GB. [2024-11-27 19:51:37,461 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:51:37,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.69ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 79.3MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 19:51:37,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.42ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:51:37,463 INFO L158 Benchmark]: Boogie Preprocessor took 59.95ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 75.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:51:37,464 INFO L158 Benchmark]: RCFGBuilder took 600.59ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 58.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 19:51:37,465 INFO L158 Benchmark]: TraceAbstraction took 73430.64ms. Allocated memory was 117.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 57.7MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-27 19:51:37,465 INFO L158 Benchmark]: Witness Printer took 211.27ms. Allocated memory is still 2.3GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 19:51:37,467 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.69ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 79.3MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.42ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.95ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 75.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 600.59ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 58.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 73430.64ms. Allocated memory was 117.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 57.7MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 211.27ms. Allocated memory is still 2.3GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.7s, OverallIterations: 21, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5342 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5270 mSDsluCounter, 9126 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6230 mSDsCounter, 1051 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3878 IncrementalHoareTripleChecker+Invalid, 4929 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1051 mSolverCounterUnsat, 2896 mSDtfsCounter, 3878 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1450 GetRequests, 1300 SyntacticMatches, 5 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14371occurred in iteration=13, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 4304 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2818 NumberOfCodeBlocks, 2818 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3247 ConstructedInterpolants, 0 QuantifiedInterpolants, 5368 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2434 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 29 InterpolantComputations, 18 PerfectInterpolantSequences, 1698/1759 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 180]: Location Invariant Derived location invariant: ((((((((((((((q_req_up == 1) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 0)) && (1 <= q_read_ev)) && (p_dw_i == 1)) && (p_num_write == 1)) || (((((((((((((q_req_up == 1) && (p_dw_st != 0)) && (c_num_read == p_num_write)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (c_last_read == p_last_write)) || ((((((((((((q_req_up == 1) && (p_dw_st != 0)) && (c_num_read == p_num_write)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (p_dw_pc == 1)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) && (1 <= q_read_ev))) || ((((((((((((((p_num_write == 0) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_req_up <= 0)) && (p_dw_pc != 1)) && (p_dw_st == 0)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) - InvariantResult [Line: 139]: Location Invariant Derived location invariant: (((((((((((((((((p_num_write == 0) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (q_read_ev == 2)) && (p_dw_i == 1)) || (((((((((((q_req_up == 1) && (p_dw_st != 0)) && (p_last_write == q_buf_0)) && (((long long) c_num_read + 1) == p_num_write)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || (((((((((((p_dw_pc == 0) && (p_num_write == 0)) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || ((((((((((((p_dw_pc == 0) && (q_req_up == 1)) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (2 <= q_write_ev)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 0)) && (1 <= q_read_ev)) && (p_dw_i == 1)) && (p_num_write == 1))) || (((((((p_dw_st != 0) && (p_last_write == q_buf_0)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 0)) && (p_dw_i == 1))) || (((((((((((((p_dw_pc == 0) && (p_num_write == 0)) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (1 == c_dr_i)) && (q_req_up <= 0)) && (c_dr_pc == 0)) && (1 <= q_read_ev)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) - InvariantResult [Line: 419]: Loop Invariant Derived loop invariant: ((((((((((((((p_last_write == q_buf_0) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 0)) && (p_dw_i == 1)) || ((((((((((p_num_write == 0) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == p_dw_pc)) && (p_dw_pc != 1)) && (c_last_read == p_last_write))) || ((((((((((((p_dw_st != 0) && (c_num_read == p_num_write)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || (((((((((((p_dw_st != 0) && (p_last_write == q_buf_0)) && (((long long) c_num_read + 1) == p_num_write)) && (2 <= q_write_ev)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || (((((((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (1 == c_dr_i)) && (q_req_up <= 0)) && (p_dw_st == 0)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || (((((((((((p_dw_st != 0) && (p_last_write == q_buf_0)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || ((((((((((((p_dw_st != 0) && (p_last_write == q_buf_0)) && (((long long) c_num_read + 1) == p_num_write)) && (q_write_ev != 0)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || (((((((((((p_dw_st != 0) && (c_num_read == p_num_write)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (p_dw_pc != 1)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || ((((((((((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) - InvariantResult [Line: 339]: Loop Invariant Derived loop invariant: (((((((((((((((((((p_last_write == q_buf_0) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 0)) && (p_dw_i == 1)) || ((((((((((((q_req_up == 1) && (p_dw_st != 0)) && (p_last_write == q_buf_0)) && (((long long) c_num_read + 1) == p_num_write)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || ((((((((((p_num_write == 0) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == p_dw_pc)) && (p_dw_pc != 1)) && (c_last_read == p_last_write))) || ((((((((((((q_req_up == 1) && (p_dw_st != 0)) && (c_num_read == p_num_write)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (1 <= q_read_ev)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || ((((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || ((((((((((((p_dw_st != 0) && (c_num_read == p_num_write)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || ((((((((((((p_num_write == 0) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (q_read_ev == 2)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || (((((((((((p_dw_st != 0) && (p_last_write == q_buf_0)) && (((long long) c_num_read + 1) == p_num_write)) && (2 <= q_write_ev)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || (((((((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (1 == c_dr_i)) && (q_req_up <= 0)) && (p_dw_st == 0)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || ((((((((((((q_req_up == 1) && (p_dw_st != 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (2 <= q_write_ev)) && (1 == c_dr_i)) && (q_free == 0)) && (p_dw_pc != 0)) && (c_dr_pc == 0)) && (1 <= q_read_ev)) && (p_dw_i == 1)) && (p_num_write == 1))) || (((((((((((p_dw_st != 0) && (p_last_write == q_buf_0)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || ((((((((((((p_dw_st != 0) && (p_last_write == q_buf_0)) && (((long long) c_num_read + 1) == p_num_write)) && (q_write_ev != 0)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1))) || (((((((((((p_dw_st != 0) && (c_num_read == p_num_write)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (p_dw_pc != 1)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) || ((((((((((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= q_write_ev)) && (c_dr_st != 0)) && (1 == c_dr_i)) && (c_dr_pc == 1)) && (q_req_up <= 0)) && (p_dw_pc == 1)) && (q_read_ev == 2)) && (p_dw_i == 1)) && (c_last_read == p_last_write))) RESULT: Ultimate proved your program to be correct! [2024-11-27 19:51:37,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec2f460-6b6d-4906-b9f9-153157c6b18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE