./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i --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_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/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_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/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_3a5361e3-2203-4e53-beff-e21e495d97d4/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 f6c9b52ffa673147438276e1d7b786b060eda002f60ced6e1594740d0a0004b3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:07:59,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:07:59,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:07:59,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:07:59,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:07:59,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:07:59,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:07:59,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:07:59,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:07:59,744 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:07:59,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:07:59,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:07:59,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:07:59,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:07:59,745 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:07:59,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:07:59,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:07:59,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:07:59,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:07:59,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:07:59,746 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:07:59,747 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:07:59,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:59,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:59,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:59,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:59,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:59,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:07:59,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:07:59,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:07:59,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:07:59,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:07:59,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:07:59,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:07:59,749 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_3a5361e3-2203-4e53-beff-e21e495d97d4/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 -> f6c9b52ffa673147438276e1d7b786b060eda002f60ced6e1594740d0a0004b3 [2024-11-28 04:08:00,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:08:00,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:08:00,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:08:00,102 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:08:00,102 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:08:00,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i [2024-11-28 04:08:03,163 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/data/0e6ad5187/077cdd1b25f5490b9dd71f4627f7a54e/FLAGfa3273c8e [2024-11-28 04:08:03,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:08:03,555 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i [2024-11-28 04:08:03,571 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/data/0e6ad5187/077cdd1b25f5490b9dd71f4627f7a54e/FLAGfa3273c8e [2024-11-28 04:08:03,601 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/data/0e6ad5187/077cdd1b25f5490b9dd71f4627f7a54e [2024-11-28 04:08:03,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:08:03,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:08:03,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:08:03,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:08:03,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:08:03,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:08:03" (1/1) ... [2024-11-28 04:08:03,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edab0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:03, skipping insertion in model container [2024-11-28 04:08:03,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:08:03" (1/1) ... [2024-11-28 04:08:03,687 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:08:04,131 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_3a5361e3-2203-4e53-beff-e21e495d97d4/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i[23609,23622] [2024-11-28 04:08:04,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:08:04,306 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:08:04,336 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_3a5361e3-2203-4e53-beff-e21e495d97d4/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i[23609,23622] [2024-11-28 04:08:04,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:08:04,479 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:08:04,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04 WrapperNode [2024-11-28 04:08:04,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:08:04,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:08:04,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:08:04,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:08:04,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,566 INFO L138 Inliner]: procedures = 145, calls = 446, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 785 [2024-11-28 04:08:04,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:08:04,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:08:04,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:08:04,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:08:04,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,647 INFO L175 MemorySlicer]: Split 310 memory accesses to 15 slices as follows [2, 8, 8, 13, 8, 62, 57, 25, 25, 11, 37, 37, 13, 0, 4]. 20 percent of accesses are in the largest equivalence class. The 76 initializations are split as follows [2, 3, 3, 0, 3, 21, 21, 7, 7, 7, 0, 0, 0, 0, 2]. The 71 writes are split as follows [0, 2, 2, 1, 2, 23, 18, 8, 8, 2, 1, 1, 1, 0, 2]. [2024-11-28 04:08:04,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:08:04,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:08:04,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:08:04,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:08:04,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (1/1) ... [2024-11-28 04:08:04,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:08:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:04,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:08:04,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:08:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:08:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:08:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:08:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:08:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:08:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:08:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:08:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:08:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-28 04:08:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:08:04,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 04:08:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 04:08:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-28 04:08:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-28 04:08:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-28 04:08:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-28 04:08:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-28 04:08:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-28 04:08:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-28 04:08:04,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-28 04:08:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:08:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:08:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:08:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 04:08:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 04:08:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 04:08:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 04:08:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 04:08:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 04:08:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-28 04:08:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-28 04:08:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-28 04:08:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-28 04:08:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-28 04:08:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-28 04:08:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-28 04:08:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-28 04:08:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:08:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-28 04:08:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-28 04:08:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-28 04:08:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-28 04:08:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:08:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:08:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:08:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:08:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:08:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:08:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:08:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:08:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:08:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:08:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:08:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:08:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:08:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:08:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 04:08:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:08:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:08:05,240 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:08:05,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:08:05,736 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-28 04:08:05,737 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-28 04:08:05,737 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-28 04:08:05,737 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-28 04:08:05,737 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: SUMMARY for call __CS_cs(); srcloc: null [2024-11-28 04:08:05,737 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-28 04:08:05,737 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-28 04:08:10,532 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-28 04:08:10,534 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:08:10,555 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:08:10,555 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:08:10,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:08:10 BoogieIcfgContainer [2024-11-28 04:08:10,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:08:10,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:08:10,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:08:10,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:08:10,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:08:03" (1/3) ... [2024-11-28 04:08:10,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4874b449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:08:10, skipping insertion in model container [2024-11-28 04:08:10,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:08:04" (2/3) ... [2024-11-28 04:08:10,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4874b449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:08:10, skipping insertion in model container [2024-11-28 04:08:10,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:08:10" (3/3) ... [2024-11-28 04:08:10,567 INFO L128 eAbstractionObserver]: Analyzing ICFG cs_fib_longer-1.i [2024-11-28 04:08:10,583 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:08:10,585 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cs_fib_longer-1.i that has 5 procedures, 187 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 04:08:10,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:08:10,679 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;@57cd530b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:08:10,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:08:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 114 states have (on average 1.3245614035087718) internal successors, (151), 115 states have internal predecessors, (151), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-28 04:08:10,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:08:10,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:10,712 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:10,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:10,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2070303919, now seen corresponding path program 1 times [2024-11-28 04:08:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:10,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444252686] [2024-11-28 04:08:10,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:10,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-28 04:08:12,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:12,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444252686] [2024-11-28 04:08:12,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444252686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:12,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:12,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:08:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943309325] [2024-11-28 04:08:12,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:12,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:08:12,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:12,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:08:12,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:08:12,489 INFO L87 Difference]: Start difference. First operand has 187 states, 114 states have (on average 1.3245614035087718) internal successors, (151), 115 states have internal predecessors, (151), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-28 04:08:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:12,635 INFO L93 Difference]: Finished difference Result 377 states and 642 transitions. [2024-11-28 04:08:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:08:12,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-11-28 04:08:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:12,647 INFO L225 Difference]: With dead ends: 377 [2024-11-28 04:08:12,647 INFO L226 Difference]: Without dead ends: 188 [2024-11-28 04:08:12,652 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 [2024-11-28 04:08:12,655 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 5 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:12,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 547 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-28 04:08:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2024-11-28 04:08:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 112 states have internal predecessors, (142), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-28 04:08:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 276 transitions. [2024-11-28 04:08:12,745 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 276 transitions. Word has length 300 [2024-11-28 04:08:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:12,745 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 276 transitions. [2024-11-28 04:08:12,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-28 04:08:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 276 transitions. [2024-11-28 04:08:12,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-28 04:08:12,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:12,758 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:12,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:08:12,760 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:12,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1229821785, now seen corresponding path program 1 times [2024-11-28 04:08:12,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:12,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46941038] [2024-11-28 04:08:12,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-28 04:08:13,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:13,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46941038] [2024-11-28 04:08:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46941038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:13,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:08:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591126889] [2024-11-28 04:08:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:13,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:08:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:13,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:08:13,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:08:13,684 INFO L87 Difference]: Start difference. First operand 184 states and 276 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-28 04:08:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:13,766 INFO L93 Difference]: Finished difference Result 367 states and 552 transitions. [2024-11-28 04:08:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:08:13,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-11-28 04:08:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:13,771 INFO L225 Difference]: With dead ends: 367 [2024-11-28 04:08:13,771 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 04:08:13,772 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 [2024-11-28 04:08:13,773 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 1 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:13,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 543 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:08:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 04:08:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2024-11-28 04:08:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 113 states have (on average 1.2654867256637168) internal successors, (143), 113 states have internal predecessors, (143), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-28 04:08:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 277 transitions. [2024-11-28 04:08:13,813 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 277 transitions. Word has length 304 [2024-11-28 04:08:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:13,813 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 277 transitions. [2024-11-28 04:08:13,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-28 04:08:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 277 transitions. [2024-11-28 04:08:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-28 04:08:13,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:13,822 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:13,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:08:13,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:13,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 543954205, now seen corresponding path program 1 times [2024-11-28 04:08:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143947415] [2024-11-28 04:08:13,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-28 04:08:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:14,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143947415] [2024-11-28 04:08:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143947415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:14,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814282408] [2024-11-28 04:08:14,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:14,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:14,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:14,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:14,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:08:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:15,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:15,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-28 04:08:16,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-28 04:08:16,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814282408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:16,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-28 04:08:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972077599] [2024-11-28 04:08:16,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:16,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:08:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:16,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:08:16,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:08:16,808 INFO L87 Difference]: Start difference. First operand 185 states and 277 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2024-11-28 04:08:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:16,939 INFO L93 Difference]: Finished difference Result 371 states and 557 transitions. [2024-11-28 04:08:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:16,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 306 [2024-11-28 04:08:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:16,946 INFO L225 Difference]: With dead ends: 371 [2024-11-28 04:08:16,946 INFO L226 Difference]: Without dead ends: 189 [2024-11-28 04:08:16,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 609 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:08:16,952 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 1 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:16,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1083 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-28 04:08:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-28 04:08:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 117 states have internal predecessors, (147), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-28 04:08:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 281 transitions. [2024-11-28 04:08:17,006 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 281 transitions. Word has length 306 [2024-11-28 04:08:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:17,006 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 281 transitions. [2024-11-28 04:08:17,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2024-11-28 04:08:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 281 transitions. [2024-11-28 04:08:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-28 04:08:17,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:17,016 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:17,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:08:17,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 04:08:17,220 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:17,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1371263579, now seen corresponding path program 2 times [2024-11-28 04:08:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101837760] [2024-11-28 04:08:17,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:08:17,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:17,789 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:08:17,789 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4522 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4522 trivial. 0 not checked. [2024-11-28 04:08:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:18,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101837760] [2024-11-28 04:08:18,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101837760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:18,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:08:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556885177] [2024-11-28 04:08:18,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:18,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:18,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:18,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:18,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:08:18,163 INFO L87 Difference]: Start difference. First operand 189 states and 281 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-28 04:08:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:18,259 INFO L93 Difference]: Finished difference Result 362 states and 545 transitions. [2024-11-28 04:08:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:08:18,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 310 [2024-11-28 04:08:18,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:18,267 INFO L225 Difference]: With dead ends: 362 [2024-11-28 04:08:18,271 INFO L226 Difference]: Without dead ends: 260 [2024-11-28 04:08:18,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:08:18,273 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 161 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:18,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 807 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:08:18,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-28 04:08:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2024-11-28 04:08:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 165 states have (on average 1.3333333333333333) internal successors, (220), 165 states have internal predecessors, (220), 85 states have call successors, (85), 8 states have call predecessors, (85), 8 states have return successors, (87), 85 states have call predecessors, (87), 85 states have call successors, (87) [2024-11-28 04:08:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 392 transitions. [2024-11-28 04:08:18,335 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 392 transitions. Word has length 310 [2024-11-28 04:08:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:18,337 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 392 transitions. [2024-11-28 04:08:18,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-28 04:08:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 392 transitions. [2024-11-28 04:08:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-28 04:08:18,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:18,347 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:18,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:08:18,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:18,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash 181888627, now seen corresponding path program 1 times [2024-11-28 04:08:18,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:18,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676160978] [2024-11-28 04:08:18,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:18,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-28 04:08:19,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:19,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676160978] [2024-11-28 04:08:19,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676160978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:19,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972878599] [2024-11-28 04:08:19,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:19,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:19,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:19,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:19,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:08:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:20,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:20,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-28 04:08:20,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-28 04:08:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972878599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:21,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:21,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:08:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039765688] [2024-11-28 04:08:21,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:21,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:08:21,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:21,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:08:21,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:08:21,477 INFO L87 Difference]: Start difference. First operand 259 states and 392 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2024-11-28 04:08:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:21,606 INFO L93 Difference]: Finished difference Result 535 states and 805 transitions. [2024-11-28 04:08:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:08:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 378 [2024-11-28 04:08:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:21,610 INFO L225 Difference]: With dead ends: 535 [2024-11-28 04:08:21,610 INFO L226 Difference]: Without dead ends: 289 [2024-11-28 04:08:21,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:08:21,613 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:21,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 811 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-28 04:08:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-28 04:08:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 195 states have (on average 1.2974358974358975) internal successors, (253), 195 states have internal predecessors, (253), 85 states have call successors, (85), 8 states have call predecessors, (85), 8 states have return successors, (87), 85 states have call predecessors, (87), 85 states have call successors, (87) [2024-11-28 04:08:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 425 transitions. [2024-11-28 04:08:21,685 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 425 transitions. Word has length 378 [2024-11-28 04:08:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:21,685 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 425 transitions. [2024-11-28 04:08:21,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2024-11-28 04:08:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 425 transitions. [2024-11-28 04:08:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-28 04:08:21,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:21,697 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 52, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:21,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:08:21,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:21,902 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:21,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash 839128181, now seen corresponding path program 2 times [2024-11-28 04:08:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021046421] [2024-11-28 04:08:21,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:08:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:22,460 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:08:22,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5546 trivial. 0 not checked. [2024-11-28 04:08:23,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:23,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021046421] [2024-11-28 04:08:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021046421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:23,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:08:23,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089430324] [2024-11-28 04:08:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:23,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:08:23,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:23,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:08:23,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:08:23,022 INFO L87 Difference]: Start difference. First operand 289 states and 425 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-28 04:08:27,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:31,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:35,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:35,541 INFO L93 Difference]: Finished difference Result 650 states and 975 transitions. [2024-11-28 04:08:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:08:35,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) Word has length 408 [2024-11-28 04:08:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:35,547 INFO L225 Difference]: With dead ends: 650 [2024-11-28 04:08:35,547 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:08:35,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:08:35,549 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 287 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:35,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1492 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2024-11-28 04:08:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:08:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 532. [2024-11-28 04:08:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 344 states have (on average 1.313953488372093) internal successors, (452), 347 states have internal predecessors, (452), 168 states have call successors, (168), 16 states have call predecessors, (168), 19 states have return successors, (183), 168 states have call predecessors, (183), 168 states have call successors, (183) [2024-11-28 04:08:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 803 transitions. [2024-11-28 04:08:35,647 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 803 transitions. Word has length 408 [2024-11-28 04:08:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:35,648 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 803 transitions. [2024-11-28 04:08:35,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-28 04:08:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 803 transitions. [2024-11-28 04:08:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-28 04:08:35,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:35,660 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 52, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:35,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:08:35,660 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:35,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash -427827051, now seen corresponding path program 1 times [2024-11-28 04:08:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391353646] [2024-11-28 04:08:35,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5546 trivial. 0 not checked. [2024-11-28 04:08:37,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:37,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391353646] [2024-11-28 04:08:37,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391353646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:37,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:37,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:08:37,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215039655] [2024-11-28 04:08:37,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:37,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:08:37,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:37,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:08:37,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:08:37,642 INFO L87 Difference]: Start difference. First operand 532 states and 803 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-28 04:08:41,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:45,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:49,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:50,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:50,135 INFO L93 Difference]: Finished difference Result 954 states and 1432 transitions. [2024-11-28 04:08:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:08:50,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) Word has length 408 [2024-11-28 04:08:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:50,142 INFO L225 Difference]: With dead ends: 954 [2024-11-28 04:08:50,143 INFO L226 Difference]: Without dead ends: 489 [2024-11-28 04:08:50,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:08:50,147 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 265 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:50,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1541 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2024-11-28 04:08:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-28 04:08:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 479. [2024-11-28 04:08:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 309 states have (on average 1.249190938511327) internal successors, (386), 312 states have internal predecessors, (386), 151 states have call successors, (151), 15 states have call predecessors, (151), 18 states have return successors, (160), 151 states have call predecessors, (160), 151 states have call successors, (160) [2024-11-28 04:08:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 697 transitions. [2024-11-28 04:08:50,229 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 697 transitions. Word has length 408 [2024-11-28 04:08:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:50,229 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 697 transitions. [2024-11-28 04:08:50,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 4 states have call successors, (56) [2024-11-28 04:08:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 697 transitions. [2024-11-28 04:08:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-28 04:08:50,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:50,234 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 52, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:50,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:08:50,235 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:50,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -627381513, now seen corresponding path program 1 times [2024-11-28 04:08:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:50,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909446416] [2024-11-28 04:08:50,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2024-11-28 04:08:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909446416] [2024-11-28 04:08:51,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909446416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459276869] [2024-11-28 04:08:51,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:51,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:51,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:51,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:51,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:08:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:52,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:08:52,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2024-11-28 04:08:53,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2024-11-28 04:08:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459276869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:54,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:54,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 04:08:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619585636] [2024-11-28 04:08:54,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:54,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:08:54,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:54,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:08:54,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:08:54,494 INFO L87 Difference]: Start difference. First operand 479 states and 697 transitions. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2024-11-28 04:08:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:54,700 INFO L93 Difference]: Finished difference Result 945 states and 1382 transitions. [2024-11-28 04:08:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:08:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 408 [2024-11-28 04:08:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:54,710 INFO L225 Difference]: With dead ends: 945 [2024-11-28 04:08:54,710 INFO L226 Difference]: Without dead ends: 509 [2024-11-28 04:08:54,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 810 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:08:54,714 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 5 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:54,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 814 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-28 04:08:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2024-11-28 04:08:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 339 states have (on average 1.2359882005899705) internal successors, (419), 342 states have internal predecessors, (419), 151 states have call successors, (151), 15 states have call predecessors, (151), 18 states have return successors, (160), 151 states have call predecessors, (160), 151 states have call successors, (160) [2024-11-28 04:08:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 730 transitions. [2024-11-28 04:08:54,799 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 730 transitions. Word has length 408 [2024-11-28 04:08:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:54,799 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 730 transitions. [2024-11-28 04:08:54,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2024-11-28 04:08:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 730 transitions. [2024-11-28 04:08:54,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-28 04:08:54,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:54,811 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 52, 21, 21, 7, 7, 7, 7, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:54,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:08:55,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:55,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:55,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:55,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1900762759, now seen corresponding path program 2 times [2024-11-28 04:08:55,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:55,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117637169] [2024-11-28 04:08:55,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:08:55,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:55,796 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:08:55,797 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5996 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5992 trivial. 0 not checked. [2024-11-28 04:08:56,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:56,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117637169] [2024-11-28 04:08:56,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117637169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:56,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067192835] [2024-11-28 04:08:56,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:08:56,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:56,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:56,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:56,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:11:08,681 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:08,681 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:08,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:11:08,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5996 backedges. 768 proven. 4 refuted. 0 times theorem prover too weak. 5224 trivial. 0 not checked. [2024-11-28 04:11:09,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5996 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5992 trivial. 0 not checked. [2024-11-28 04:11:10,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067192835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:10,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:10,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-28 04:11:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005065168] [2024-11-28 04:11:10,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:10,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:11:10,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:10,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:11:10,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:11:10,564 INFO L87 Difference]: Start difference. First operand 509 states and 730 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 9 states have call successors, (112), 5 states have call predecessors, (112), 6 states have return successors, (113), 7 states have call predecessors, (113), 9 states have call successors, (113) [2024-11-28 04:11:14,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:11:18,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:11:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:20,803 INFO L93 Difference]: Finished difference Result 906 states and 1331 transitions. [2024-11-28 04:11:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:11:20,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 9 states have call successors, (112), 5 states have call predecessors, (112), 6 states have return successors, (113), 7 states have call predecessors, (113), 9 states have call successors, (113) Word has length 438 [2024-11-28 04:11:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:20,811 INFO L225 Difference]: With dead ends: 906 [2024-11-28 04:11:20,811 INFO L226 Difference]: Without dead ends: 478 [2024-11-28 04:11:20,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:20,816 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 239 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 143 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:20,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 975 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 573 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2024-11-28 04:11:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-28 04:11:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 465. [2024-11-28 04:11:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 325 states have (on average 1.28) internal successors, (416), 327 states have internal predecessors, (416), 115 states have call successors, (115), 22 states have call predecessors, (115), 24 states have return successors, (131), 115 states have call predecessors, (131), 115 states have call successors, (131) [2024-11-28 04:11:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 662 transitions. [2024-11-28 04:11:20,875 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 662 transitions. Word has length 438 [2024-11-28 04:11:20,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:20,876 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 662 transitions. [2024-11-28 04:11:20,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 9 states have call successors, (112), 5 states have call predecessors, (112), 6 states have return successors, (113), 7 states have call predecessors, (113), 9 states have call successors, (113) [2024-11-28 04:11:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 662 transitions. [2024-11-28 04:11:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-28 04:11:20,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:20,883 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 52, 21, 21, 7, 7, 7, 7, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:20,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:11:21,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:21,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:21,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -346805415, now seen corresponding path program 1 times [2024-11-28 04:11:21,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:21,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540678840] [2024-11-28 04:11:21,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:21,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5996 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5992 trivial. 0 not checked. [2024-11-28 04:11:28,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:28,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540678840] [2024-11-28 04:11:28,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540678840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:28,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086985212] [2024-11-28 04:11:28,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:28,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:28,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:28,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:28,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:11:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:29,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 2926 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:11:29,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:30,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:11:37,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:37,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:37,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2024-11-28 04:11:41,039 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2024-11-28 04:11:41,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 104 [2024-11-28 04:12:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5996 backedges. 813 proven. 4 refuted. 0 times theorem prover too weak. 5179 trivial. 0 not checked. [2024-11-28 04:12:04,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:05,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-28 04:12:05,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-11-28 04:12:06,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:12:06,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-28 04:12:06,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:12:06,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-28 04:12:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5996 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5992 trivial. 0 not checked. [2024-11-28 04:12:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086985212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:06,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:06,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 9] total 31 [2024-11-28 04:12:06,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756112716] [2024-11-28 04:12:06,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:06,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:12:06,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:06,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:12:06,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=787, Unknown=1, NotChecked=0, Total=930 [2024-11-28 04:12:06,825 INFO L87 Difference]: Start difference. First operand 465 states and 662 transitions. Second operand has 31 states, 29 states have (on average 6.0344827586206895) internal successors, (175), 31 states have internal predecessors, (175), 17 states have call successors, (121), 12 states have call predecessors, (121), 13 states have return successors, (121), 17 states have call predecessors, (121), 17 states have call successors, (121) [2024-11-28 04:12:10,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:14,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:18,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:22,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:26,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:31,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:35,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:39,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:43,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:47,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:51,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:55,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:12:59,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:03,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:07,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:11,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:15,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:19,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:23,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:27,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:34,922 INFO L93 Difference]: Finished difference Result 838 states and 1222 transitions. [2024-11-28 04:13:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:13:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 6.0344827586206895) internal successors, (175), 31 states have internal predecessors, (175), 17 states have call successors, (121), 12 states have call predecessors, (121), 13 states have return successors, (121), 17 states have call predecessors, (121), 17 states have call successors, (121) Word has length 438 [2024-11-28 04:13:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:34,928 INFO L225 Difference]: With dead ends: 838 [2024-11-28 04:13:34,928 INFO L226 Difference]: Without dead ends: 496 [2024-11-28 04:13:34,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 855 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=324, Invalid=1397, Unknown=1, NotChecked=0, Total=1722 [2024-11-28 04:13:34,932 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 1100 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 1151 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:34,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1814 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1151 Valid, 1476 Invalid, 20 Unknown, 0 Unchecked, 86.7s Time] [2024-11-28 04:13:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-28 04:13:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 492. [2024-11-28 04:13:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 344 states have (on average 1.2848837209302326) internal successors, (442), 346 states have internal predecessors, (442), 121 states have call successors, (121), 22 states have call predecessors, (121), 26 states have return successors, (145), 123 states have call predecessors, (145), 121 states have call successors, (145) [2024-11-28 04:13:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 708 transitions. [2024-11-28 04:13:35,008 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 708 transitions. Word has length 438 [2024-11-28 04:13:35,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:35,009 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 708 transitions. [2024-11-28 04:13:35,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 6.0344827586206895) internal successors, (175), 31 states have internal predecessors, (175), 17 states have call successors, (121), 12 states have call predecessors, (121), 13 states have return successors, (121), 17 states have call predecessors, (121), 17 states have call successors, (121) [2024-11-28 04:13:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 708 transitions. [2024-11-28 04:13:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2024-11-28 04:13:35,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:35,016 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 21, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:35,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:13:35,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:13:35,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:35,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash -642318594, now seen corresponding path program 1 times [2024-11-28 04:13:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:35,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661211442] [2024-11-28 04:13:35,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:35,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 6709 trivial. 0 not checked. [2024-11-28 04:13:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661211442] [2024-11-28 04:13:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661211442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650933565] [2024-11-28 04:13:40,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:40,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:40,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:40,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:40,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:13:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:42,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 04:13:42,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:43,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 04:13:43,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:43,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-28 04:13:43,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 04:13:43,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:43,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-11-28 04:13:43,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:43,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-28 04:13:44,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:44,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-28 04:13:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 1344 proven. 36 refuted. 0 times theorem prover too weak. 5363 trivial. 0 not checked. [2024-11-28 04:13:44,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650933565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:46,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:13:46,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-11-28 04:13:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306018332] [2024-11-28 04:13:46,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:46,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:13:46,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:46,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:13:46,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:13:46,149 INFO L87 Difference]: Start difference. First operand 492 states and 708 transitions. Second operand has 20 states, 16 states have (on average 10.1875) internal successors, (163), 20 states have internal predecessors, (163), 16 states have call successors, (123), 5 states have call predecessors, (123), 8 states have return successors, (123), 13 states have call predecessors, (123), 16 states have call successors, (123) [2024-11-28 04:13:50,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:54,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:13:58,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:02,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:06,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:10,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:14,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:18,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:22,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:26,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:30,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:37,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:37,442 INFO L93 Difference]: Finished difference Result 616 states and 881 transitions. [2024-11-28 04:14:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:14:37,443 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 10.1875) internal successors, (163), 20 states have internal predecessors, (163), 16 states have call successors, (123), 5 states have call predecessors, (123), 8 states have return successors, (123), 13 states have call predecessors, (123), 16 states have call successors, (123) Word has length 495 [2024-11-28 04:14:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:37,448 INFO L225 Difference]: With dead ends: 616 [2024-11-28 04:14:37,449 INFO L226 Difference]: Without dead ends: 470 [2024-11-28 04:14:37,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=342, Invalid=1550, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:14:37,452 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 709 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 509 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:37,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2440 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1354 Invalid, 11 Unknown, 0 Unchecked, 49.1s Time] [2024-11-28 04:14:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-11-28 04:14:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 458. [2024-11-28 04:14:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 320 states have (on average 1.25625) internal successors, (402), 321 states have internal predecessors, (402), 112 states have call successors, (112), 22 states have call predecessors, (112), 25 states have return successors, (134), 114 states have call predecessors, (134), 112 states have call successors, (134) [2024-11-28 04:14:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 648 transitions. [2024-11-28 04:14:37,640 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 648 transitions. Word has length 495 [2024-11-28 04:14:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:37,641 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 648 transitions. [2024-11-28 04:14:37,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 10.1875) internal successors, (163), 20 states have internal predecessors, (163), 16 states have call successors, (123), 5 states have call predecessors, (123), 8 states have return successors, (123), 13 states have call predecessors, (123), 16 states have call successors, (123) [2024-11-28 04:14:37,641 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 648 transitions. [2024-11-28 04:14:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-28 04:14:37,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:37,654 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 21, 21, 7, 7, 7, 7, 6, 6, 6, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:37,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:37,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:14:37,855 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:37,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1766893447, now seen corresponding path program 1 times [2024-11-28 04:14:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545546195] [2024-11-28 04:14:37,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6461 trivial. 0 not checked. [2024-11-28 04:14:42,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545546195] [2024-11-28 04:14:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545546195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215878726] [2024-11-28 04:14:42,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:42,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:42,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:42,350 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:42,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:14:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:44,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:14:44,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:44,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 04:14:45,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:14:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 1161 proven. 56 refuted. 0 times theorem prover too weak. 5264 trivial. 0 not checked. [2024-11-28 04:14:45,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:47,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:14:47,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 04:14:47,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:14:47,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 04:14:48,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:14:48,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 04:14:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6461 trivial. 0 not checked. [2024-11-28 04:14:48,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215878726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:48,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 29 [2024-11-28 04:14:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764766669] [2024-11-28 04:14:48,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:48,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:14:48,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:48,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:14:48,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:14:48,583 INFO L87 Difference]: Start difference. First operand 458 states and 648 transitions. Second operand has 29 states, 24 states have (on average 7.041666666666667) internal successors, (169), 28 states have internal predecessors, (169), 17 states have call successors, (125), 7 states have call predecessors, (125), 11 states have return successors, (125), 14 states have call predecessors, (125), 17 states have call successors, (125) [2024-11-28 04:14:52,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:14:56,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:00,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:04,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:08,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:12,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:16,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:20,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:24,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:28,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:32,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:36,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:40,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:45,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:49,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:15:53,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:09,235 INFO L93 Difference]: Finished difference Result 1067 states and 1542 transitions. [2024-11-28 04:16:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:16:09,236 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 7.041666666666667) internal successors, (169), 28 states have internal predecessors, (169), 17 states have call successors, (125), 7 states have call predecessors, (125), 11 states have return successors, (125), 14 states have call predecessors, (125), 17 states have call successors, (125) Word has length 475 [2024-11-28 04:16:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:09,253 INFO L225 Difference]: With dead ends: 1067 [2024-11-28 04:16:09,253 INFO L226 Difference]: Without dead ends: 689 [2024-11-28 04:16:09,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 941 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=587, Invalid=2953, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:16:09,268 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 924 mSDsluCounter, 4067 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 720 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 4535 SdHoareTripleChecker+Invalid, 4482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:09,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 4535 Invalid, 4482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [720 Valid, 3746 Invalid, 16 Unknown, 0 Unchecked, 76.6s Time] [2024-11-28 04:16:09,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-28 04:16:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 668. [2024-11-28 04:16:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 447 states have (on average 1.2416107382550337) internal successors, (555), 445 states have internal predecessors, (555), 184 states have call successors, (184), 35 states have call predecessors, (184), 36 states have return successors, (209), 187 states have call predecessors, (209), 184 states have call successors, (209) [2024-11-28 04:16:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 948 transitions. [2024-11-28 04:16:09,559 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 948 transitions. Word has length 475 [2024-11-28 04:16:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:09,561 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 948 transitions. [2024-11-28 04:16:09,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 7.041666666666667) internal successors, (169), 28 states have internal predecessors, (169), 17 states have call successors, (125), 7 states have call predecessors, (125), 11 states have return successors, (125), 14 states have call predecessors, (125), 17 states have call successors, (125) [2024-11-28 04:16:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 948 transitions. [2024-11-28 04:16:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-28 04:16:09,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:09,615 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 21, 21, 7, 7, 7, 7, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:09,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:16:09,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:16:09,817 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:09,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 130966128, now seen corresponding path program 1 times [2024-11-28 04:16:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841389083] [2024-11-28 04:16:09,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6220 trivial. 0 not checked. [2024-11-28 04:16:16,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841389083] [2024-11-28 04:16:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841389083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931128829] [2024-11-28 04:16:16,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:16,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:16,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:16,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:16:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:18,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:16:18,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:19,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 04:16:20,643 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-28 04:16:20,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2024-11-28 04:16:21,059 INFO L349 Elim1Store]: treesize reduction 47, result has 24.2 percent of original size [2024-11-28 04:16:21,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2024-11-28 04:16:22,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:16:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 988 proven. 65 refuted. 0 times theorem prover too weak. 5179 trivial. 0 not checked. [2024-11-28 04:16:22,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:24,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2024-11-28 04:16:24,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2024-11-28 04:16:25,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931128829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:25,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:16:25,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2024-11-28 04:16:25,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065469024] [2024-11-28 04:16:25,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:25,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:16:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:25,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:16:25,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:16:25,609 INFO L87 Difference]: Start difference. First operand 668 states and 948 transitions. Second operand has 31 states, 28 states have (on average 5.821428571428571) internal successors, (163), 30 states have internal predecessors, (163), 17 states have call successors, (118), 9 states have call predecessors, (118), 13 states have return successors, (118), 15 states have call predecessors, (118), 17 states have call successors, (118) [2024-11-28 04:16:29,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:33,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:37,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:41,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:45,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:49,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:53,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:16:57,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:01,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:05,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:09,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:14,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:18,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:22,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:26,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:30,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:34,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:38,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:42,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:46,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:50,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:54,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:17:58,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:18:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:18:26,836 INFO L93 Difference]: Finished difference Result 1606 states and 2284 transitions. [2024-11-28 04:18:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:18:26,837 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 5.821428571428571) internal successors, (163), 30 states have internal predecessors, (163), 17 states have call successors, (118), 9 states have call predecessors, (118), 13 states have return successors, (118), 15 states have call predecessors, (118), 17 states have call successors, (118) Word has length 458 [2024-11-28 04:18:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:18:26,848 INFO L225 Difference]: With dead ends: 1606 [2024-11-28 04:18:26,849 INFO L226 Difference]: Without dead ends: 1038 [2024-11-28 04:18:26,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 790 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=724, Invalid=3968, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 04:18:26,857 INFO L435 NwaCegarLoop]: 552 mSDtfsCounter, 1829 mSDsluCounter, 4838 mSDsCounter, 0 mSdLazyCounter, 6712 mSolverCounterSat, 2766 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 5390 SdHoareTripleChecker+Invalid, 9501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2766 IncrementalHoareTripleChecker+Valid, 6712 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:18:26,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 5390 Invalid, 9501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2766 Valid, 6712 Invalid, 23 Unknown, 0 Unchecked, 116.1s Time] [2024-11-28 04:18:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-28 04:18:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 906. [2024-11-28 04:18:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 557 states have (on average 1.1310592459605027) internal successors, (630), 562 states have internal predecessors, (630), 305 states have call successors, (305), 36 states have call predecessors, (305), 43 states have return successors, (317), 307 states have call predecessors, (317), 305 states have call successors, (317) [2024-11-28 04:18:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1252 transitions. [2024-11-28 04:18:27,138 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1252 transitions. Word has length 458 [2024-11-28 04:18:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:18:27,140 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1252 transitions. [2024-11-28 04:18:27,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 5.821428571428571) internal successors, (163), 30 states have internal predecessors, (163), 17 states have call successors, (118), 9 states have call predecessors, (118), 13 states have return successors, (118), 15 states have call predecessors, (118), 17 states have call successors, (118) [2024-11-28 04:18:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1252 transitions. [2024-11-28 04:18:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-28 04:18:27,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:18:27,169 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 21, 21, 7, 7, 7, 7, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:18:27,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:18:27,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:18:27,370 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:18:27,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash -318782468, now seen corresponding path program 1 times [2024-11-28 04:18:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:27,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473770846] [2024-11-28 04:18:27,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6229 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6220 trivial. 0 not checked. [2024-11-28 04:18:34,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473770846] [2024-11-28 04:18:34,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473770846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:18:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906720835] [2024-11-28 04:18:34,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:34,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:34,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:34,470 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:18:34,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:18:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:45,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:18:45,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:18:46,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 04:18:48,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:18:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6229 backedges. 998 proven. 41 refuted. 0 times theorem prover too weak. 5190 trivial. 0 not checked. [2024-11-28 04:18:48,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:18:49,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:18:49,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-28 04:18:50,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:18:50,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-28 04:18:51,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:18:51,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-28 04:18:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6229 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6220 trivial. 0 not checked. [2024-11-28 04:18:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906720835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:18:52,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:18:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 34 [2024-11-28 04:18:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383606814] [2024-11-28 04:18:52,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:18:52,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:18:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:52,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:18:52,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:18:52,038 INFO L87 Difference]: Start difference. First operand 906 states and 1252 transitions. Second operand has 34 states, 32 states have (on average 5.90625) internal successors, (189), 34 states have internal predecessors, (189), 21 states have call successors, (125), 11 states have call predecessors, (125), 15 states have return successors, (125), 20 states have call predecessors, (125), 21 states have call successors, (125) [2024-11-28 04:18:56,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:00,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:04,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:08,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:12,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:16,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:20,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:24,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:28,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:32,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:36,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:40,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:44,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:48,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:52,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:19:56,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:00,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:04,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:08,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:12,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:16,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:27,267 INFO L93 Difference]: Finished difference Result 1151 states and 1594 transitions. [2024-11-28 04:20:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:20:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 5.90625) internal successors, (189), 34 states have internal predecessors, (189), 21 states have call successors, (125), 11 states have call predecessors, (125), 15 states have return successors, (125), 20 states have call predecessors, (125), 21 states have call successors, (125) Word has length 459 [2024-11-28 04:20:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:27,274 INFO L225 Difference]: With dead ends: 1151 [2024-11-28 04:20:27,274 INFO L226 Difference]: Without dead ends: 513 [2024-11-28 04:20:27,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=342, Invalid=1820, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:20:27,279 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 780 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 882 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 3807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:27,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 2720 Invalid, 3807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [882 Valid, 2904 Invalid, 21 Unknown, 0 Unchecked, 93.6s Time] [2024-11-28 04:20:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-28 04:20:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 505. [2024-11-28 04:20:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 335 states have (on average 1.1582089552238806) internal successors, (388), 338 states have internal predecessors, (388), 144 states have call successors, (144), 22 states have call predecessors, (144), 25 states have return successors, (147), 144 states have call predecessors, (147), 144 states have call successors, (147) [2024-11-28 04:20:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 679 transitions. [2024-11-28 04:20:27,423 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 679 transitions. Word has length 459 [2024-11-28 04:20:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:27,424 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 679 transitions. [2024-11-28 04:20:27,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 5.90625) internal successors, (189), 34 states have internal predecessors, (189), 21 states have call successors, (125), 11 states have call predecessors, (125), 15 states have return successors, (125), 20 states have call predecessors, (125), 21 states have call successors, (125) [2024-11-28 04:20:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 679 transitions. [2024-11-28 04:20:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-28 04:20:27,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:27,430 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 21, 21, 7, 7, 7, 7, 6, 6, 6, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:27,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:20:27,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:20:27,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:27,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash 94688100, now seen corresponding path program 1 times [2024-11-28 04:20:27,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:27,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66853098] [2024-11-28 04:20:27,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 6457 trivial. 0 not checked. [2024-11-28 04:20:31,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:31,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66853098] [2024-11-28 04:20:31,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66853098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:20:31,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413900629] [2024-11-28 04:20:31,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:31,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:31,788 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:31,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5361e3-2203-4e53-beff-e21e495d97d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:20:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:33,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 3258 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:20:33,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:35,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 04:20:36,020 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-28 04:20:36,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2024-11-28 04:20:36,380 INFO L349 Elim1Store]: treesize reduction 47, result has 24.2 percent of original size [2024-11-28 04:20:36,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2024-11-28 04:20:37,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:20:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 1046 proven. 62 refuted. 0 times theorem prover too weak. 5371 trivial. 0 not checked. [2024-11-28 04:20:37,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:20:39,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:20:39,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 166 [2024-11-28 04:20:41,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413900629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:20:41,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:20:41,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2024-11-28 04:20:41,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919930484] [2024-11-28 04:20:41,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:20:41,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:20:41,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:41,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:20:41,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:20:41,012 INFO L87 Difference]: Start difference. First operand 505 states and 679 transitions. Second operand has 31 states, 28 states have (on average 6.642857142857143) internal successors, (186), 31 states have internal predecessors, (186), 19 states have call successors, (123), 10 states have call predecessors, (123), 14 states have return successors, (123), 17 states have call predecessors, (123), 19 states have call successors, (123) [2024-11-28 04:20:45,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:49,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:53,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:20:57,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:01,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:05,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:09,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:13,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:17,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:21,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:25,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:29,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:33,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:37,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:41,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:45,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:49,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:53,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:21:57,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:22:01,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:22:05,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:22:09,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:22:13,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []